What is the onomatopoeia for animal sounds?

There is no single onomatopoeia for animal sounds. Each animal has its own: a cow moos, a bee buzzes, a snake hisses, a crow caws. The catch is that half the words on the usual lists aren't onomatopoeia at all. A dog's woof is the sound; its bark is just the verb for making it, and you can hear the dog in one word and nothing in the other. Sort the sound-words by animal, keep the imitations and set aside the verbs, and the right word for any creature is the one you can hear it in.

Farm and Barnyard Animals: Moo, Oink, Baa, Neigh, Cluck

"The cock's shrill clarion" is how Gray heard a rooster at dawn in his "Elegy Written in a Country Churchyard" (1751), but the word that imitates the crow itself is cock-a-doodle-doo, which shows up in print as early as Shakespeare's "The Tempest" (1611), where Ariel sings "The straine of strutting Chanticleere / cry cockadidle-dowe." The barnyard is where most readers first meet onomatopoeia, and it holds the most recognizable sound-words in English.

Each word below pairs with the animal it belongs to:

• moo: a cow
• oink: a pig
• baa: a sheep or goat
• neigh: a horse's loud call
• cluck: a hen
• quack: a duck
• cock-a-doodle-doo: a rooster's crow
• gobble: a turkey
• hee-haw: a donkey

Some of these animals carry more than one word. A horse neighs when it calls out loud, but it also whinnies (a softer, higher call) and snorts (a short blast through the nose). The right word depends on which noise you mean, and on whether you want the sound the animal makes or the plain verb for the act of making it. That second split runs through the whole list.

Pets and Household Animals: Woof, Meow, Purr, Hiss

A dog barks, growls, and yelps, but only one of those three is the sound itself: woof. The animals you live with are where the sound-word and the plain verb pull apart most sharply, so they are the clearest place to start hearing the difference.

• woof / arf: a dog's full-throated bark
• yip: a small dog's sharp, high bark
• growl: the low rumble a dog or cat makes as a warning
• meow / mew: a cat's call (mew is the thinner, kitten version)
• purr: the steady rumble of a contented cat
• hiss: the sharp breath a cat or snake pushes out as a threat
• squeak: a mouse, rat, or guinea pig
• chirp: a pet bird's short, bright note

The dog is the case to keep in mind. Woof is the sound the dog makes; bark is the thing the dog does. You can hear the dog in woof, and you can't hear anything in bark. The lists tend to file the two together as if they were the same kind of word. They aren't.

Birds: Tweet, Chirp, Caw, Hoot, Cheep, Coo

Hopkins built an entire stanza out of birdsong in "The Windhover" (1877), but his sharpest single bird-sound comes in "Spring" (1877): "Thrush's eggs look little low heavens, and thrush / Through the echoing timber does so rinse and wring / The ear." The thrush there has no one sound-word, and that is the rule with birds: a single bird often carries several, one for each call.

• tweet / cheep: a small songbird's light, high note
• chirp: a short, repeated bird note (also a cricket, cross-listed below)
• twitter: the running, mixed sound of a flock
• caw: a crow's or raven's harsh call
• hoot: an owl
• coo: a dove or pigeon's soft, rounded call
• honk: a goose
• squawk: a parrot or a startled bird

A crow caws and only caws. An owl hoots, but it also screeches and hisses depending on the species and the moment. The richer the bird's range of calls, the more sound-words it collects, which is why poets reach for birds when they want sound to do real work in a line.

Wild and Big Animals: Roar, Growl, Howl, Trumpet, Screech

The big-animal words are the ones writers reach for in description rather than dialogue, and they are also the ones most likely to be verbs wearing an onomatopoeia's clothes.

• roar: a lion's or big cat's open-throated bellow
• growl / snarl: the low warning of a bear or big cat
• howl: a wolf's long, rising call
• trumpet: an elephant's blast
• screech: a monkey or a bird of prey
• bellow: the deep, sustained cry of a large animal

Most of these are not what they look like. Several (roar, growl, snarl, bellow) are really descriptive verbs that have drifted toward sound-imitation, not true onomatopoeia. You can almost hear the noise in roar, the long open vowel does some of the work, but the word names the action of roaring as much as it imitates the sound. Trumpet doesn't imitate an elephant at all; it borrows the name of a brass instrument because the call sounds like one. Telling the imitations from the verbs is worth doing on its own.

Insects, Frogs, and Snakes: Buzz, Hiss, Ribbit, Chirp

The smallest creatures own some of the strongest true onomatopoeia in English. Buzz is about as pure as the figure gets: the word is mostly the sound, a sustained voiced consonant that hums the way the insect does.

• buzz / hum: a bee, fly, or mosquito
• hiss: a snake (the ss is the sound itself)
• ribbit: a frog (North American)
• croak: a frog (the older English literary word)
• chirp: a cricket
• click: some beetles and other insects

The frog splits two ways. American English settled on ribbit, but the longer English literary tradition used croak, and neither is more correct than the other. The ribbit most Americans picture actually comes from one species, the Pacific tree frog, whose call Hollywood recorded and then dubbed over frogs of every kind. The frog makes the broader point too: the same animal gets rendered differently from one place to the next, and the difference only widens once you cross into another language.

Which of These Are Really Onomatopoeia, and Which Are Just Verbs?

Onomatopoeia (a word that imitates the sound it names; a scheme of sound, meaning a figure of arrangement, where the word's shape carries part of the meaning) is narrower than the animal-sound lists make it look. A strict onomatopoeia is a word you can hear the noise in: woof, moo, hiss, buzz, caw. Many of the words the lists file under animal onomatopoeia are not imitations at all. They are ordinary verbs for the act of making the sound. Bark, low, bray, and bellow name what the animal is doing without sounding like the doing.

The test in practice: say the word aloud with no context and ask whether you can hear the animal in the word itself. Woof sounds like the noise a dog makes. Bark names the behavior and sounds like nothing in particular. Buzz is the bee; hum is close behind it. Low (the old word for what a cow does) tells you a cow made a sound but carries none of the sound with it.

Animal	Sound-word (the onomatopoeia)	Verb for the act
Dog	woof, arf	bark
Cow	moo	low
Sheep	baa	bleat
Horse	neigh	whinny
Crow	caw	call
Lion	(no true imitation)	roar
Snake	hiss	hiss

The snake is the clean edge case: hiss does both jobs at once. It is a true onomatopoeia (you can hear the sound in the word) and the standard verb for what a snake does. A few words land that way, doing imitation and naming in one.

Then there is the gray zone. Growl and roar sit between the columns. The long, rough vowels do imitate something of the sound, so they are not pure verbs like bark, but they also name the act in a way woof never does. Scholars draw the line in different places here, and the boundary is genuinely fuzzy. The clean cases (woof and bark, moo and low) are clear; growl is a judgment call. None of this makes one kind of word better than the other. They do different jobs, and which one you reach for is a choice you can make on purpose.

Animal Onomatopoeia in Real Writing

The oldest animal onomatopoeia on record is a frog chorus. In Aristophanes' "The Frogs" (405 BC), a marsh of frogs sings "Brekekekèx koàx koáx" at Dionysus as he rows across the underworld, repeating it until the noise itself becomes the joke. The Greek does what no English summary can: it puts the frogs' racket on the page as sound, so the reader hears the chorus the character is trying to row through.

Tennyson built his whole short poem "The Eagle" (1851) toward a single sound-word in the last line: "And like a thunderbolt he falls." The bird's plunge is silent until that final crash, and thunderbolt lands the noise of it. Earlier in his career Tennyson used a softer one in "The Princess" (1847), where "the moan of doves in immemorial elms, / And murmuring of innumerable bees" leans on moan and murmur to carry the doves' coo and the bees' hum across two lines without naming either bird outright.

A flat verb would only report these sounds. "The frogs croaked," "the eagle dropped," "the bees made noise" tell you a sound happened. The onomatopoeia makes you hear it, which is the whole reason a writer reaches for the sound-word instead of the verb.

Did you know? The same animal's sound is spelled differently from one language to the next, which proves the word is a convention and not a transcription. An English rooster crows cock-a-doodle-doo, a German one kikeriki, a French one cocorico, a Japanese one kokekokko. An English dog says woof, a French one ouaf, a Japanese one wan-wan. (Derek Abbott's Animal Noise Page, University of Adelaide.)

How to Pick the Right Animal Sound-Word

Start from the animal and the exact noise it is making, not from a general idea of the animal. A cat that is content purrs; a cat that is cornered hisses; the same cat asking for food meows. A single chirp is one cricket or one small bird; a twitter is the running sound of a flock. Match the specific noise to the group above, then pick the word whose sound fits the noise rather than the verb for the behavior.

Animal	Best-fit sound-word
Cow	moo
Dog	woof, arf
Cat	meow, purr, hiss
Sheep	baa
Horse	neigh, whinny
Crow	caw
Owl	hoot
Bee	buzz
Snake	hiss
Frog	ribbit, croak
Lion	roar
Wolf	howl

The one rule that reorders the field: there is no onomatopoeia for animal sounds in general, only a sound-word for each animal's noise, and the word you want is the one you can hear the animal in. Reach for woof when you want the reader to hear the dog, and for bark when you only need to say it made a sound. Use one sound-word per moment, not a string of them, because a single sound-word lands and three in a row turn into a cartoon. If you want the broader set of sound-imitating words past animals, a full inventory of sound-words for crashes, bells, and machines groups them the same way, by the thing making the noise, and the sound-words for water, from drip to splash to roar follow the same logic of matching the word to the specific event.