A2 Counters & Numbers 10 min read Easy

Counting Animals (hiki vs. tou)

Count small/medium pets and insects with ~匹 (hiki), and large beasts or working animals with ~頭 (tou).

Grammar Rule in 30 Seconds

Use {匹|ひき} for small animals and {頭|とう} for large animals to count them correctly in Japanese.

  • Use {匹|ひき} for small animals like cats, dogs, and rabbits: {猫|ねこ}が三{匹|ひき}います。
  • Use {頭|とう} for large animals like elephants, cows, and horses: {象|ぞう}が二{頭|とう}います。
  • The counter follows the noun or the particle 'ga': {犬|いぬ}を二{匹|ひき}飼っています。
Noun + が/を + Number + Counter ({匹|ひき}/{頭|とう}) + Verb

Overview

Japanese, like many East Asian languages, frequently employs counters (助数詞 | じょすうし | josūshi) when quantifying nouns. Instead of simply saying "three cats," you say "cat three-counter." This system categorizes objects, animals, and actions, often reflecting their perceived characteristics, shape, or function. For animals, the primary counters are ~匹 ({ひき}|hiki) and ~頭 ({とう}|tō), which broadly distinguish between smaller/medium-sized animals and larger, typically domesticated or powerful wild animals.

This distinction is not always based on literal physical size alone but also on cultural perception, utility, and historical context.

The use of counters provides a layer of nuance, indicating how an animal is perceived in a given context. For instance, counting a small dog with ~匹 emphasizes its pet-like quality, while using ~頭 for a police dog highlights its status and working role. Mastering these counters requires not just memorizing conjugations but also understanding the underlying classification principles.

This guide will clarify when to use ~匹 and ~頭, delve into their phonetic changes, and equip you with the knowledge to use them accurately in various situations.

How This Grammar Works

Japanese animal counters primarily divide the animal kingdom into two broad categories: those counted with ~匹 and those with ~頭. This categorization is complex and involves more than just an animal's physical dimensions. It often reflects how humans interact with or perceive these animals.
1. The ~匹 ({ひき}|hiki) Counter:
~匹 is the most common counter for animals. It applies to most small and medium-sized land animals, fish, insects, and even many wild animals that might be considered large in a Western context (e.g., wolves, bears, deer). The general rule of thumb is: if you can reasonably pick it up, or if it's not typically used for heavy labor or perceived as a massive, powerful beast, it likely takes ~匹.
This counter carries a sense of familiarity or being somewhat manageable.
~匹 is famously irregular due to phonetic assimilation, causing it to undergo sound changes depending on the preceding number. This phenomenon, known as rendaku ({連濁}|れんだく), makes pronunciation smoother and more natural. You'll encounter ~匹 becoming ~piki (ぴき) or ~biki (びき).
For example, 一匹 ({いっぴき}|ippiki) for one animal, 三匹 ({さんびき}|sanbiki) for three, and 六匹 ({ろっぴき}|roppiki) for six. These sound changes are crucial for native-like pronunciation.
Examples:
  • (ねこ)二匹います。 (Neko ga nihiki imasu. | There are two cats.)
  • 金魚(きんぎょ)五匹()っています。 (Kingyo o gohiki katte imasu. | I'm raising five goldfish.)
  • (もり)(おおかみ)一匹()ました。 (Mori de ōkami o ippiki mimashita. | I saw one wolf in the forest.)
2. The ~頭 ({とう}|tō) Counter:
~頭 is used for large animals, particularly livestock (e.g., cows, horses), zoo animals of significant size (e.g., elephants, giraffes, lions), and very large marine mammals (e.g., whales, dolphins). The kanji literally means "head," reflecting its historical use in counting heads of cattle. This counter implies a greater scale, power, or utility of the animal.
Beyond sheer size, ~頭 can also be used honorifically for highly trained or working animals such as police dogs ({警察犬}|けいさつけん|keisatsuken), guide dogs ({盲導犬}|もうどうけん|mōdōken), or racehorses. In these cases, it signifies respect for their role and capabilities, elevating them beyond mere pets. Unlike ~匹, ~頭 is largely phonetically stable, making its conjugation more straightforward.
Examples:
  • 牧場(ぼくじょう)(うし)三頭います。 (Bokujō ni ushi ga santō imasu. | There are three cows on the farm.)
  • 動物園(どうぶつえん)(ぞう)二頭()た。 (Dōbutsuen de zō o nitō mita. | I saw two elephants at the zoo.)
  • (かれ)(いえ)には(かしこ)(いぬ)一頭いる。 (Kare no ie ni wa kashikoi inu ga ittō iru. | He has one intelligent dog at his house. [Implying a working or highly capable dog])

Formation Pattern

1
Forming expressions with ~匹 and ~頭 follows the general Japanese counter pattern: [Number] + [Counter]. However, ~匹 presents specific phonetic changes you must master. ~頭 is more consistent.
2
1. General Pattern:
3
[Number] + 匹/頭
4
When asking "How many animals?", you use 何匹 ({なんびき}|nanbiki) for ~匹 and 何頭 ({なんとう}|nantō) for ~頭. Note that for 何匹, the hiki also undergoes rendaku to biki.
5
2. Conjugation Table for ~匹 and ~頭:
6
This table illustrates the specific phonetic changes for ~匹 and the consistent pattern for ~頭:
7
| Number (kanji) | Number (hiragana) | ~匹 (small/medium animals) | ~頭 (large/working animals) |
8
| :------------- | :---------------- | :----------------------------- | :----------------------------- |
9
| 一 | いち | 一匹 ({いっぴき}|ippiki) | 一頭 ({いっとう}|ittō) |
10
| 二 | に | 二匹 ({にひき}|nihiki) | 二頭 ({にとう}|nitō) |
11
| 三 | さん | 三匹 ({さんびき}|sanbiki) | 三頭 ({さんとう}|santō) |
12
| 四 | よん | 四匹 ({よんひき}|yonhiki) | 四頭 ({よんとう}|yontō) |
13
| 五 | ご | 五匹 ({ごひき}|gohiki) | 五頭 ({ごとう}|gotō) |
14
| 六 | ろく | 六匹 ({ろっぴき}|roppiki) | 六頭 ({ろくとう}|rokutō) / ({ろっとう}|rottō) |
15
| 七 | なな | 七匹 ({ななひき}|nanahiki) | 七頭 ({ななとう}|nanatō) |
16
| 八 | はち | 八匹 ({はっぴき}|happiki) | 八頭 ({はっとう}|hattō) |
17
| 九 | きゅう | 九匹 ({きゅうひき}|kyūhiki) | 九頭 ({きゅうとう}|kyūtō) |
18
| 十 | じゅう | 十匹 ({じゅっぴき}|juppiki) / ({じっぴき}|jippiki) | 十頭 ({じゅっとう}|juttō) / ({じっとう}|jittō) |
19
| 何 | なん | 何匹 ({なんびき}|nanbiki) | 何頭 ({なんとう}|nantō) |
20
Important Notes on Phonetic Changes for ~匹:
21
Numbers ending in a glottal stop /tsu/ (っ): ({いち}|ichi), ({ろく}|roku), ({はち}|hachi), ({じゅう}|jū) trigger a small (sokuon) followed by piki. This forms いっぴき, ろっぴき, はっぴき, じゅっぴき (or じっぴき). This is a common pattern in Japanese, where a consonant at the end of a number merges with the following counter's consonant, often resulting in a geminate (double) consonant pp.
22
Numbers ending in /n/ (ん): ({さん}|san) and ({なん}|nan) trigger biki. This forms さんびき, なんびき. This n to b change is another example of rendaku.
23
Other numbers: ({に}|ni), ({よん}|yon), ({ご}|go), ({なな}|nana), ({きゅう}|kyū) are relatively regular, taking hiki directly: にひき, よんひき, ごひき, ななひき, きゅうひき.
24
While ろくとう is grammatically correct for six ~頭, the contracted ろっとう is also very common, especially in casual speech. Similarly, for 十頭, じゅっとう is frequently heard alongside じっとう.
25
Examples of application:
26
公園(こうえん)には(はと)何匹いますか? (Kōen ni wa hato ga nanbiki imasu ka? | How many doves are in the park?)
27
(ぞう)赤ちゃん(あかちゃん)五頭()まれました。 (Zō no akachan ga gotō umaremashita. | Five baby elephants were born.)
28
(わたし)部屋(へや)()一匹(はい)ってきた。 (Watashi no heya ni ka ga ippiki haitte kita. | One mosquito came into my room.)

When To Use It

Choosing between ~匹 and ~頭 hinges on the speaker's perception of the animal, its typical size, its role, and sometimes its species. While general guidelines exist, Japanese speakers occasionally make subjective distinctions. Understanding these nuances is key to natural usage.
Use ~匹 ({ひき}|hiki) for:
  • Most common pets: Dogs ({犬}|いぬ|inu), cats ({猫}|ねこ|neko), hamsters ({ハムスター}|hamusutā), birds (though ~羽 is also common), and smaller reptiles. This reflects their manageable size and often their status as companions.
  • (わたし)(いぬ)二匹(ねこ)一匹()っている。 (Watashi wa inu o nihiki to neko o ippiki katte iru. | I have two dogs and one cat.)
  • Fish and other aquatic creatures: From goldfish to sharks, most fish are counted with ~匹, regardless of size, while they are alive or in the water. This also extends to shrimp ({海老}|えび|ebi), crabs ({蟹}|かに|kani), and sometimes jellyfish ({クラゲ}|kurage).
  • 水槽(すいそう)熱帯魚(ねったいぎょ)十匹います。 (Suisō ni nettaigyo ga juppiki imasu. | There are ten tropical fish in the tank.)
  • Insects and arachnids: All insects ({虫}|むし|mushi), spiders ({蜘蛛}|くも|kumo), and similar creatures are counted with ~匹, even if they are large or frightening.
  • (なつ)には()何匹()る。 (Natsu ni wa ka ga nanbiki mo deru. | Many mosquitos appear in summer.)
  • Many wild animals: Deer ({鹿}|しか|shika), foxes ({狐}|きつね|kitsune), raccoons ({たぬき}|tanuki), rabbits ({兎}|うさぎ|usagi, though ~羽 is also frequently used due to a historical quirk), and even larger predators like wolves ({狼}|おおかみ|ōkami) or bears ({熊}|くま|kuma) are typically counted with ~匹. The boundary here can sometimes blur with ~頭 if the animal is perceived as exceptionally large or powerful in a specific context.
  • (やま)(くま)一匹()かけた。 (Yama de kuma o ippiki mikaketa. | I caught sight of one bear in the mountains.)
Use ~頭 ({とう}|tō) for:
  • Large livestock: Cows ({牛}|うし|ushi), horses ({馬}|うま|uma), pigs ({豚}|ぶた|buta), sheep ({羊}|ひつじ|hitsuji). These animals are typically raised for labor, food, or products, and their size and utility are prominent features.
  • あの農家(のうか)(うま)七頭飼育(しいく)している。 (Ano nōka wa uma o nanatō shiiku shite iru. | That farmer is raising seven horses.)
  • Very large wild or zoo animals: Elephants ({象}|ぞう|zō), giraffes ({麒麟}|きりん|kirin), lions ({ライオン}|raion), tigers ({虎}|とら|tora), rhinoceroses ({サイ}|sai). These are often animals that command respect due to their size, strength, or exotic nature.
  • 動物園(どうぶつえん)には(あたら)しい{ライオン}が二頭()たらしい。 (Dōbutsuen ni wa atarashii raion ga nitō kita rashii. | Apparently, two new lions came to the zoo.)
  • Large marine mammals: Whales ({鯨}|くじら|kujira), dolphins ({イルカ}|iruka), seals ({アザラシ}|azarashi). Despite living in water, their immense size and intelligence place them in the ~頭 category.
  • (おき)(くじら)何頭()えた。 (Oki ni kujira ga nantō ka mieta. | Several whales were visible offshore.)
  • Working or highly trained animals: Police dogs, guide dogs, therapy animals, or even exceptional pet dogs whose capabilities are being highlighted. This usage elevates their status and is a significant cultural nuance. A pet dog might be 一匹, but a service dog performing duties might be 一頭.
  • 事件(じけん)捜査(そうさ)には警察犬(けいさつけん)三頭出動(しゅつどう)した。 (Jiken no sōsa ni wa keisatsuken ga santō shutsudō shita. | Three police dogs were dispatched for the incident investigation.)
Key Principle: Perception and Context
The choice between ~匹 and ~頭 isn't always strictly biological. A small horse (a pony) is still counted with ~頭 because it is perceived as a horse. Conversely, a large snake, despite its length, is typically ~匹 because it aligns with the category of non-mammalian, often wild or exotic, creatures not typically associated with human labor or massive size perception in the same way as cattle.
If an animal is large but has little direct interaction or utility for humans, ~匹 can sometimes still be preferred (e.g., a very large wild bird of prey might be 一匹).

Common Mistakes

Learners frequently encounter difficulties with animal counters due to the phonetic changes of ~匹, the subjective nature of "size," and confusion with other counters. Being aware of these pitfalls can significantly improve your accuracy.
  • Forgetting ~匹's Phonetic Changes (Rendaku): This is arguably the most common error. Saying いちひき (ichihiki) instead of いっぴき (ippiki), or さんひき (sanhiki) instead of さんびき (sanbiki), immediately marks you as a non-native speaker. The (sokuon) and b (rendaku) changes are fundamental. Dedicate time to practicing the full conjugation table until these come naturally. Think of ippiki or sanbiki as single words rather than ichi + hiki or san + hiki.
  • Misjudging "Size" and Animal Classification: The division isn't always intuitive for speakers of languages without such a counter system. For example, a wolf ({狼}|おおかみ|ōkami) or a bear ({熊}|くま|kuma) might seem large enough for ~頭, but they are usually counted with ~匹. Similarly, a small pony ({子馬}|こうま|kōma) is still ~頭 because it's a horse. This highlights that it's about species categorization and cultural perception, not just absolute physical size. Remember the honorific ~頭 for working animals; failing to use it when appropriate can miss a subtle but important nuance of respect.
  • Confusing with ~羽 ({わ}|wa): While ~匹 covers many animals, birds ({鳥}|とり|tori) are typically counted with ~羽. This also extends to rabbits ({兎}|うさぎ|usagi), a notable exception for a land mammal. Incorrectly using ~匹 for birds or ~羽 for a cat are common mix-ups. The historical reason for rabbits being counted with ~羽 (linked to medieval Buddhist dietary restrictions) is a classic piece of Japanese counter trivia.
  • Incorrect: 公園(こうえん)(とり)三匹()た。 (Kōen de tori o sanbiki mita.)
  • Correct: 公園(こうえん)(とり)三羽()た。 (Kōen de tori o sanba mita. | I saw three birds in the park.)
  • Using ~個 ({こ}|ko) for Animals: ~個 is a general counter for small, discrete, often inanimate objects. Applying it to living animals is grammatically incorrect and can sound dehumanizing or objectifying, as if you're referring to them as mere items. Always use an appropriate animal counter.
  • Incorrect: (わたし)(ねこ)二個{います}|。 (Watashi no neko wa niko imasu.)
  • Correct: (わたし)(ねこ)二匹{います}|。 (Watashi no neko wa nihiki imasu. | I have two cats.)
  • Overgeneralizing ~頭: While ~頭 is for large animals, don't assume every large creature automatically takes this counter. For example, a large fish is still ~匹 while it's swimming. The context (alive, in its natural habitat vs. part of a farm/zoo inventory) can sometimes influence the choice.

Real Conversations

Understanding how ~匹 and ~頭 are used in natural, everyday Japanese contexts is essential. These counters appear frequently in discussions about pets, wildlife, and even news reports about animals.

Casual Conversation about Pets:

A

A

(いぬ)何匹(なんびき)いるの?

(Inu, nanbiki iru no? | How many dogs do you have?)

B

B

(いま)は一匹だけだよ。

(Ima wa ippiki dake da yo. | Only one right now.)

A

A

あの(あの)猫、{かわいい}|! 何匹(なんびき)(あつ)まってるね。

(Ano neko, kawaii! Nanbiki mo atsumatteru ne. | That cat is cute! So many are gathered, aren't they?)

B

B

ホントだ!三匹(さんびき)いる!

(Honto da! Sanbiki iru! | Really! There are three!)

Discussing Zoo Animals or Wildlife:

A

A

動物園(どうぶつえん)キリン(キリン)を五頭も()たよ。

(Dōbutsuen de kirin o gotō mo mita yo. | I saw as many as five giraffes at the zoo!)

B

B

すごいね!(わたし)は一頭しか()なかった。

(Sugoi ne! Watashi wa ittō shika minakatta. | That's amazing! I only saw one.)

A

A

野生(やせい)(くま)(さと)()たってニュースで()ってたね。

(Yasei no kuma ga sato ni deta tte nyūsu de itteta ne. | The news said a wild bear appeared in the village, didn't it?)

B

B

{うん}|、{テレビ}では二匹って()ってたけど、(こわ)いね。

(Un, terebi de wa nihiki tte itteta kedo, kowai ne. | Yeah, they said two on TV, but it's scary.)

Social Media/Online Context:

- {うち}の{可愛い猫}が二匹、{日向ぼっこ}してる写真。 (Uchi no kawaii neko ga nihiki, hinatabokko shiteru shashin. | A picture of my two cute cats sunbathing.)

- {昨日}、{〇〇牧場}で()まれたばかりの{子馬}を一頭()てきた!可愛(かわい)かった~。

(Kinō, marumaru bokujō de umareta bakari no kouma o ittō mite kita! Kawaiikatta~. | Yesterday, I went to see one newborn foal at XX Ranch! It was so cute~.)

Notice that even for a

Counter Conjugation Table

Number Small (Hiki) Large (Tou)
1
一匹 (いっぴき)
一頭 (いっとう)
2
二匹 (にひき)
二頭 (にとう)
3
三匹 (さんびき)
三頭 (さんとう)
4
四匹 (よんひき)
四頭 (よんとう)
5
五匹 (ごひき)
五頭 (ごとう)
6
六匹 (ろっぴき)
六頭 (ろっとう)
7
七匹 (ななひき)
七頭 (ななとう)
8
八匹 (はっぴき)
八頭 (はっとう)
9
九匹 (きゅうひき)
九頭 (きゅうとう)
10
十匹 (じゅっぴき)
十頭 (じゅっとう)

Meanings

These are numeral classifiers used to count animals based on their physical size and stature.

1

Small Animals

Used for animals generally smaller than a human.

“{猫|ねこ}が一{匹|ひき}。”

“{兎|うさぎ}が三{匹|ひき}。”

2

Large Animals

Used for animals generally larger than a human or livestock.

“{馬|うま}が五{頭|とう}。”

“{象|ぞう}が一{頭|とう}。”

Reference Table

Reference table for Counting Animals (hiki vs. tou)
Form Structure Example
Affirmative
Noun + ga + Number + Counter + imasu
{猫|ねこ}が三{匹|ひき}います。
Negative
Noun + ga + Number + Counter + imasen
{猫|ねこ}が三{匹|ひき}いません。
Question
Noun + ga + Nan-Counter + desu ka
{猫|ねこ}は何{匹|ひき}ですか?
Small Animal
Hiki
{犬|いぬ}二{匹|ひき}
Large Animal
Tou
{馬|うま}二{頭|とう}
Counting 1
Special sound change
{一匹|いっぴき}
Counting 6
Special sound change
{六匹|ろっぴき}

Formality Spectrum

Formal
{猫|ねこ}を二{匹|ひき}飼っております。

{猫|ねこ}を二{匹|ひき}飼っております。 (Talking about pets)

Neutral
{猫|ねこ}を二{匹|ひき}飼っています。

{猫|ねこ}を二{匹|ひき}飼っています。 (Talking about pets)

Informal
{猫|ねこ}二{匹|ひき}飼ってるよ。

{猫|ねこ}二{匹|ひき}飼ってるよ。 (Talking about pets)

Slang
猫二匹いるわ。

猫二匹いるわ。 (Talking about pets)

Animal Counter Map

Animal Counters

Small

  • {匹|ひき} hiki

Large

  • {頭|とう} tou

Examples by Level

1

{猫|ねこ}が二{匹|ひき}います。

There are two cats.

2

{犬|いぬ}が一{匹|ひき}います。

There is one dog.

3

{馬|うま}が一{頭|とう}います。

There is one horse.

4

{牛|うし}が三{頭|とう}います。

There are three cows.

1

{公園|こうえん}で{犬|いぬ}を三{匹|ひき}みました。

I saw three dogs at the park.

2

{動物園|どうぶつえん}で{象|ぞう}を二{頭|とう}みました。

I saw two elephants at the zoo.

3

{家|いえ}に{猫|ねこ}が四{匹|ひき}います。

There are four cats in the house.

4

{牧場|ぼくじょう}には{牛|うし}が十{頭|とう}います。

There are ten cows on the farm.

1

{ペットショップ|ぺっとしょっぷ}には{子犬|こいぬ}が六{匹|ひき}もいます。

There are as many as six puppies at the pet shop.

2

{野生|やせい}の{熊|くま}を二{頭|とう}みつけました。

We spotted two wild bears.

3

{金魚|きんぎょ}を八{匹|ひき}飼っています。

I keep eight goldfish.

4

{鯨|くじら}が五{頭|とう}泳いでいます。

Five whales are swimming.

1

{保護|ほご}された{犬|いぬ}は全部で九{匹|ひき}です。

There are nine rescued dogs in total.

2

{牧場|ぼくじょう}の{馬|うま}は七{頭|とう}です。

There are seven horses on the farm.

3

{実験|じっけん}でマウスを十{匹|ひき}使いました。

We used ten mice in the experiment.

4

{希少|きしょう}な{動物|どうぶつ}が三{頭|とう}確認されました。

Three rare animals were confirmed.

1

{山|やま}の{奥|おく}で{猪|いのしし}を二{頭|とう}見ました。

I saw two wild boars deep in the mountains.

2

{水族館|すいぞくかん}でイルカを四{匹|ひき}見ました。

I saw four dolphins at the aquarium.

3

{農家|のうか}は{牛|うし}を八{頭|とう}育てています。

The farmer is raising eight cows.

4

{昆虫|こんちゅう}を五{匹|ひき}捕まえました。

I caught five insects.

1

{伝説|でんせつ}の{龍|りゅう}が二{頭|とう}現れました。

Two legendary dragons appeared.

2

{実験|じっけん}用ラットを六{匹|ひき}用意してください。

Please prepare six lab rats.

3

{牧畜|ぼくちく}において{牛|うし}は一{頭|とう}も欠かせません。

In livestock farming, not a single cow can be spared.

4

{猫|ねこ}を七{匹|ひき}も飼うのは大変です。

Keeping seven cats is quite a task.

Easily Confused

Counting Animals (hiki vs. tou) vs {匹|ひき} vs {羽|わ}

Both are used for small animals.

Counting Animals (hiki vs. tou) vs {頭|とう} vs {個|こ}

Learners use {個|こ} for everything.

Counting Animals (hiki vs. tou) vs {匹|ひき} vs {頭|とう}

Size ambiguity.

Common Mistakes

{猫|ねこ}が二{個|こ}

{猫|ねこ}が二{匹|ひき}

Using a generic counter for animals.

{一匹|いちひき}

{一匹|いっぴき}

Missing the sound change.

{犬|いぬ}が二{頭|とう}

{犬|いぬ}が二{匹|ひき}

Using the large counter for a small animal.

{象|ぞう}が二{匹|ひき}

{象|ぞう}が二{頭|とう}

Using the small counter for a large animal.

{馬|うま}が三{個|こ}

{馬|うま}が三{頭|とう}

Using generic counter.

{六匹|ろくひき}

{六匹|ろっぴき}

Missing sound change.

{八頭|はちとう}

{八頭|はっとう}

Missing sound change.

{兎|うさぎ}が二{頭|とう}

{兎|うさぎ}が二{匹|ひき}

Over-formalizing small animals.

{鯨|くじら}が三{匹|ひき}

{鯨|くじら}が三{頭|とう}

Underestimating size.

{熊|くま}が四{匹|ひき}

{熊|くま}が四{頭|とう}

Underestimating size.

{龍|りゅう}が一{匹|ひき}

{龍|りゅう}が一{頭|とう}

Misapplying mythical creature counters.

{恐竜|きょうりゅう}が三{匹|ひき}

{恐竜|きょうりゅう}が三{頭|とう}

Misapplying size logic.

{牛|うし}を二{匹|ひき}飼う

{牛|うし}を二{頭|とう}飼う

Ignoring agricultural standard.

Sentence Patterns

{___}が{___}{匹|ひき}います。

{___}が{___}{頭|とう}います。

{___}を{___}{匹|ひき}飼っています。

{___}で{___}{頭|とう}の{動物|どうぶつ}を見ました。

Real World Usage

Pet shop very common

{子犬|こいぬ}を二{匹|ひき}見ました。

Zoo common

{象|ぞう}が一{頭|とう}います。

Farm common

{牛|うし}が五{頭|とう}います。

Texting common

{猫|ねこ}二{匹|ひき}飼ってる!

News occasional

{野生|やせい}の{熊|くま}が二{頭|とう}出没。

Research occasional

{マウス|まうす}を十{匹|ひき}使用。

💡

Size is key

Always think: is it smaller than me? Use {匹|ひき}.
⚠️

Sound changes

Don't forget 1, 6, 8, 10 sound changes.
🎯

Birds are different

Use {羽|わ} for birds, not {匹|ひき}.
💬

Livestock

Cows and horses are always {頭|とう}.

Smart Tips

Always check the size first.

猫が二頭 猫が二匹

Use {羽|わ} instead of {匹|ひき}.

鳥が二匹 鳥が二羽

Use {頭|とう}.

馬が二匹 馬が二頭

Watch for sound changes.

一匹 (いちひき) 一匹 (いっぴき)

Pronunciation

ippiki, roppiki, happiki, juppiki

Sound changes

Numbers 1, 6, 8, and 10 change sound when followed by 'hiki' or 'tou'.

Flat

neko ga ni-hiki

Neutral statement

Memorize It

Mnemonic

Hiki is for the 'hitchhiker' (small), Tou is for the 'towering' (large).

Visual Association

Imagine a tiny cat hitchhiking on your thumb (hiki) and a giant elephant towering over a skyscraper (tou).

Rhyme

Small is hiki, big is tou, counting animals is what we do!

Story

I went to the farm. I saw one tiny mouse, {一匹|いっぴき}. Then I saw a giant cow, {一頭|いっとう}. The mouse was small, so it got {匹|ひき}. The cow was big, so it got {頭|とう}.

Word Web

{匹|ひき}{頭|とう}{猫|ねこ}{犬|いぬ}{馬|うま}{象|ぞう}

Challenge

Look at 5 animals online and name their counter in Japanese.

Cultural Notes

Size is the primary factor for animal classification.

Livestock are almost always counted with {頭|とう}.

Wild animals are often counted with {頭|とう} in news reports.

The counter {匹|ひき} originally referred to a length of cloth. {頭|とう} is a Sino-Japanese term meaning 'head'.

Conversation Starters

{家|いえ}に{ペット|ぺっと}は何{匹|ひき}いますか?

{動物園|どうぶつえん}で{一番|いちばん}好きな{動物|どうぶつ}は何{頭|とう}いますか?

{牧場|ぼくじょう}には{牛|うし}が何{頭|とう}いますか?

{野生|やせい}の{動物|どうぶつ}を{見|み}たことがありますか?

Journal Prompts

Describe the pets you have.
Describe your visit to a zoo.
Write about a farm you visited.
Discuss the importance of animal conservation.

Common Mistakes

Incorrect

Correct


Incorrect

Correct


Incorrect

Correct


Incorrect

Correct

Test Yourself

Choose the right counter for a cat. Multiple Choice

{猫|ねこ}が三____。

✓ Correct! ✗ Not quite. Correct answer: a
Cats are small animals.
Fill in the correct counter for an elephant.

{象|ぞう}が二____。

✓ Correct! ✗ Not quite. Correct answer: b
Elephants are large animals.
Fix the mistake. Error Correction

Find and fix the mistake:

{牛|うし}が三{匹|ひき}。

✓ Correct! ✗ Not quite. Correct answer: a
Cows are large.
Reorder the sentence. Sentence Reorder

Arrange the words in the correct order:

All words placed

Click words above to build the sentence

✓ Correct! ✗ Not quite. Correct answer: a
Correct word order.
Translate to Japanese. Translation

I have one dog.

Answer starts with: a...

✓ Correct! ✗ Not quite. Correct answer: a
Dogs are small.
Choose the correct sound change. Multiple Choice

1 cat = ____。

✓ Correct! ✗ Not quite. Correct answer: a
Correct sound change.
Build a sentence. Sentence Building

Use {馬|うま} and 2.

✓ Correct! ✗ Not quite. Correct answer: a
Horses are large.
Match animal to counter. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: a
Cat is small.

Score: /8

Practice Exercises

8 exercises
Choose the right counter for a cat. Multiple Choice

{猫|ねこ}が三____。

✓ Correct! ✗ Not quite. Correct answer: a
Cats are small animals.
Fill in the correct counter for an elephant.

{象|ぞう}が二____。

✓ Correct! ✗ Not quite. Correct answer: b
Elephants are large animals.
Fix the mistake. Error Correction

Find and fix the mistake:

{牛|うし}が三{匹|ひき}。

✓ Correct! ✗ Not quite. Correct answer: a
Cows are large.
Reorder the sentence. Sentence Reorder

二 / います / 匹 / 猫 / が

✓ Correct! ✗ Not quite. Correct answer: a
Correct word order.
Translate to Japanese. Translation

I have one dog.

✓ Correct! ✗ Not quite. Correct answer: a
Dogs are small.
Choose the correct sound change. Multiple Choice

1 cat = ____。

✓ Correct! ✗ Not quite. Correct answer: a
Correct sound change.
Build a sentence. Sentence Building

Use {馬|うま} and 2.

✓ Correct! ✗ Not quite. Correct answer: a
Horses are large.
Match animal to counter. Match Pairs

Cat - ?

✓ Correct! ✗ Not quite. Correct answer: a
Cat is small.

Score: /8

Practice Bank

5 exercises
Reorder the words to say 'I saw three dogs.' Sentence Reorder

dogs / saw / three / (犬を / 見た / 三匹)

✓ Correct! ✗ Not quite. Correct answer: 犬を 三匹 見た
Translate 'How many cows?' into Japanese. Translation

How many cows?

✓ Correct! ✗ Not quite. Correct answer: 牛は何頭ですか?
Match the animal to its counter. Match Pairs

Match the pairs:

✓ Correct! ✗ Not quite. Correct answer: All matched
Fill in the blank for 3 animals (small). Fill in the Blank

ハムスターを___買いました。

✓ Correct! ✗ Not quite. Correct answer: さんびき
Which sentence is correct for a guide dog? Multiple Choice

Choose the respectful option:

✓ Correct! ✗ Not quite. Correct answer: 盲導犬が一頭います。

Score: /5

FAQ (8)

Japanese uses counters to categorize objects by shape and size.

No, that would sound very strange.

Yes, many! {羽|わ} for birds, {枚|まい} for flat things.

Insects are small, so they use {匹|ひき}.

Yes, mostly.

Use the generic {つ|つ} if you must, but it's better to learn the right one.

No, humans use {人|にん}.

Yes, they are used in all forms of communication.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish low

No classifiers

Japanese uses classifiers; Spanish does not.

French low

No classifiers

Japanese uses classifiers; French does not.

German low

No classifiers

Japanese uses classifiers; German does not.

Chinese high

Measure words

Chinese has different measure words than Japanese.

Arabic low

No classifiers

Japanese uses classifiers; Arabic does not.

Japanese high

Classifiers

The system is unique to Japanese.

Learning Path

Prerequisites

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