When do I use 头 vs 只 for animals?

Use 头 for large livestock (cows, pigs, buffalo) and some large wild animals (elephants). Use 只 as the general classifier for most other animals, especially small ones like cats, dogs, birds, and insects.

Can I use 只 for a cow?

No, that would be incorrect. Cows are traditionally counted with 头. Using 只 for a cow sounds unnatural to native speakers.

Is 头 ever used for small animals?

Generally no, but in informal or dialectal speech, a very large rabbit or a big fish might be described with 头 for humorous or emphatic effect. Standard Chinese reserves 头 for large livestock and certain large wild animals.

How do I know which classifier to use for each animal?

The safest approach is to memorize the classifier for common animals: 头 for cows/pigs, 匹 for horses, 条 for fish/snakes, and 只 for most others (cats, dogs, birds, chickens, etc.). When unsure, you can often use 只 for any animal, but it may sound odd for livestock; checking a dictionary is recommended.

Easily confusedHSK 4

头 vs 只 (tóu vs zhī): animal classifiers for livestock and general animals

In Chinese, the classifiers 头 (tóu) and 只 (zhī) both count animals but are not interchangeable. 头 is used for large livestock (cattle, pigs, buffalo) and some large wild animals (elephants), while 只 is the default classifier for most other animals, especially smaller ones like cats, dogs, birds, and insects. Choosing the wrong classifier sounds unnatural, so learners must associate each animal with its standard classifier.

Both 头 (tóu) and 只 (zhī) are classifiers for animals in Mandarin, but they serve different categories. 头 is reserved for larger livestock—cows, pigs, buffalo—and occasionally large wild animals like elephants. 只 is the general-purpose classifier for most animals, particularly smaller ones such as cats, dogs, birds, and insects. The distinction is mostly based on size and convention, but not all large animals use 头: for example, horses take 匹 (pǐ), so it’s essential to learn each animal’s standard classifier.

Quando usare ciascuno

头tóu

large livestock

Use 头 for large domesticated livestock such as cows, buffalo, pigs, and sometimes for large wild animals like elephants and rhinoceroses. It emphasizes the animal's bulk and is the conventional choice in most regions of China.

Head is also used for certain non-animal items (e.g., 一头蒜 'a head of garlic'). For horses, however, the classifier must be 匹, not 头, despite their size.

只zhī

animals (general)

Use 只 as the default classifier for the vast majority of animals, including cats, dogs, birds, chickens, ducks, rabbits, and insects. It is the safe choice when you do not know the specific classifier, though some animals have dedicated classifiers (e.g., 条 for long, thin animals).

For sheep (羊), both 只 and 头 are possible; 一只羊 is common for regular sheep, while 一头羊 may be used for a larger animal or in certain dialects. Similarly, a very large rabbit could be described with 头, but that is nonstandard.

In sintesi

	头	只
Typical animals	Cows, pigs, buffalo, elephants, rhinos	Cats, dogs, birds, chickens, ducks, rabbits, insects
Size implication	Large-sized animals (livestock, megaherbivores)	Small- to medium-sized animals
Conventional usage	Mandatory for cows, pigs, buffalo; also used for some large wild animals	General-purpose; covers most animals not requiring a specific classifier
Exceptions	Not used for horses (use 匹) or for camels (use 峰 or 匹)	Not used for fish (use 条) or for snakes (use 条)
Non-animal uses	Also used for heads of garlic, certain hollow objects	Also used for one of a pair (e.g., 一只鞋 'one shoe')

Esempi

头
农夫买了一头牛。
Nóng fū mǎi le yì tóu niú.
The farmer bought a cow.
Cows always take 头, not 只.
头
猪圈里有三头猪。
Zhū juàn lǐ yǒu sān tóu zhū.
There are three pigs in the pigsty.
Pigs are livestock; 头 is standard.
只
她养了一只猫和两只狗。
Tā yǎng le yì zhī māo hé liǎng zhī gǒu.
She keeps one cat and two dogs.
Cats and dogs take 只, not 头.
只
窗外有一只小鸟。
Chuāng wài yǒu yì zhī xiǎo niǎo.
There is a little bird outside the window.
Small birds take 只.
头
动物园里有一头大象和一只兔子。
Dòng wù yuán lǐ yǒu yì tóu dà xiàng hé yì zhī tù zi.
The zoo has an elephant and a rabbit.
Elephants are large; 头 is common for them. Rabbits take 只.
只
他买了一只羊。
Tā mǎi le yì zhī yáng.
He bought a sheep.
Sheep can take either 只 or 头; 只 is more common for regular-sized sheep.

Errori comuni

Using 只 for a cow (e.g., 一只牛) — always use 头 for cows.
Using 头 for a cat (e.g., 一头猫) — cats are small, so use 只.
Assuming all large animals take 头 — horses use 匹, not 头.
Using 只 for an elephant (e.g., 一只大象) — although occasionally heard, standard usage prefers 头 for elephants.
Confusing 头 with 匹 for horses: 一匹马 is correct; 一头马 is wrong.

FAQ

When do I use 头 vs 只 for animals?: Use 头 for large livestock (cows, pigs, buffalo) and some large wild animals (elephants). Use 只 as the general classifier for most other animals, especially small ones like cats, dogs, birds, and insects.
Can I use 只 for a cow?: No, that would be incorrect. Cows are traditionally counted with 头. Using 只 for a cow sounds unnatural to native speakers.
Is 头 ever used for small animals?: Generally no, but in informal or dialectal speech, a very large rabbit or a big fish might be described with 头 for humorous or emphatic effect. Standard Chinese reserves 头 for large livestock and certain large wild animals.
How do I know which classifier to use for each animal?: The safest approach is to memorize the classifier for common animals: 头 for cows/pigs, 匹 for horses, 条 for fish/snakes, and 只 for most others (cats, dogs, birds, chickens, etc.). When unsure, you can often use 只 for any animal, but it may sound odd for livestock; checking a dictionary is recommended.