Animal vocabulary in English is usually learned in groups. Some words name animals people keep at home, such as pets. Some words name farm animals, wild animals, birds, sea animals, insects, and reptiles. These groups make it easier to choose the right word in a real situation, such as talking about a pet at home, an animal on a farm, or a creature you see in nature. The basic words in Introduction support this vocabulary by showing how English names things clearly and directly.

Common pet words include dog, cat, rabbit, hamster, fish, and bird. People often use these words when they talk about an animal in the house or in a yard. The care words go with everyday actions: feed a pet, clean a cage or tank, walk a dog, and look after an animal. In a simple sentence, subject + verb + object works well, as in I feed the cat and She cleans the fish tank. For more about actions and routines, see Verbs: Present Simple.

catfeedbirdhamsterdogfishrabbitclean

---

To clean a pet means to keep its home neat and healthyTo feed a pet means to give it foodA fish is a pet that lives in waterA bird is an animal with feathers and wingsA rabbit is a small animal with long earsA hamster is a tiny pet that often lives in a cageA dog is a common pet that people keep at homeA cat is a small pet that often likes quiet places

Common pet words and care language

Word	Definition
dog	A dog is a common pet that people keep at home.
cat	A cat is a small pet that often likes quiet places.
rabbit	A rabbit is a small animal with long ears.
hamster	A hamster is a tiny pet that often lives in a cage.
fish	A fish is a pet that lives in water.
bird	A bird is an animal with feathers and wings.
feed	To feed a pet means to give it food.
clean	To clean a pet means to keep its home neat and healthy.

Scramble

Farm animal names are very common in English: cow, pig, sheep, goat, horse, chicken, and duck. These words appear in conversations about farms, food, and rural life. A farmer may keep cows for milk, sheep for wool, or chickens for eggs. English often uses these words with simple descriptions, such as a big horse, two ducks, or the sheep in the field. They also fit naturally into everyday naming practice, which connects with Individual Words: Animal Nouns.

barnhorsegoatpigducksheepcowchicken

---

A cow is a large farm animal that gives milkA horse is a strong animal people can rideA barn is a building where farm animals or supplies are keptA duck is a water bird often found near farmsA pig is a farm animal with a round body and a short noseA goat is a farm animal that likes to climbA chicken is a farm bird that lays eggsA sheep is a farm animal with soft wool

Farm animal words for everyday use

Word	Definition
cow	A cow is a large farm animal that gives milk.
pig	A pig is a farm animal with a round body and a short nose.
sheep	A sheep is a farm animal with soft wool.
goat	A goat is a farm animal that likes to climb.
horse	A horse is a strong animal people can ride.
chicken	A chicken is a farm bird that lays eggs.
duck	A duck is a water bird often found near farms.
barn	A barn is a building where farm animals or supplies are kept.

Scramble

Wild animal words describe animals living in nature or in zoos, not in homes or on farms. Common mammals include lion, tiger, elephant, giraffe, monkey, bear, wolf, and deer. Familiar bird words include eagle, owl, parrot, penguin, pigeon, and swan. These words often appear in stories, documentaries, and travel descriptions. English speakers use them to identify animals by size, habitat, or behavior, as in a lion in the grass or an owl at night.

giraffemonkeyeagletigerelephantbearlionowl

---

An owl is a bird that is active at nightA lion is a big wild cat known as the king of animalsA monkey is a wild animal that likes to climb treesA bear is a strong wild animal with thick furAn eagle is a large bird that flies high and sees farAn elephant is a very large animal with a trunkA giraffe is a tall animal with a very long neckA tiger is a large wild cat with stripes

Wild animal words for animals and birds

Word	Definition
lion	A lion is a big wild cat known as the king of animals.
tiger	A tiger is a large wild cat with stripes.
elephant	An elephant is a very large animal with a trunk.
giraffe	A giraffe is a tall animal with a very long neck.
monkey	A monkey is a wild animal that likes to climb trees.
bear	A bear is a strong wild animal with thick fur.
eagle	An eagle is a large bird that flies high and sees far.
owl	An owl is a bird that is active at night.

Scramble

Animals found in water include fish, shark, whale, dolphin, octopus, crab, and seal. Land animals in this group include turtle, snake, lizard, crocodile, and frog. Some of these words name animals that live partly in water and partly on land, so context matters. A frog may be near a river, a seal may be in the sea, and a crocodile may live in a river or swamp. These words are useful in Categories: Animals and Habitats because habitat and animal name often go together.

dolphinsnakesharkfrogwhaleoctopusturtlefish

---

A shark is a large sea animal with sharp teethAn octopus is a sea animal with eight armsA turtle is a reptile with a hard shellA frog is a small animal that can live near water and on landA dolphin is a smart sea animal that often jumps out of the waterA snake is a long reptile without legsA whale is a very large sea animalA fish is an animal that lives in water and breathes there

Water and reptile animal words

Word	Definition
fish	A fish is an animal that lives in water and breathes there.
shark	A shark is a large sea animal with sharp teeth.
whale	A whale is a very large sea animal.
dolphin	A dolphin is a smart sea animal that often jumps out of the water.
octopus	An octopus is a sea animal with eight arms.
turtle	A turtle is a reptile with a hard shell.
snake	A snake is a long reptile without legs.
frog	A frog is a small animal that can live near water and on land.

Scramble

Small creature words are part of everyday English and often appear in gardens, houses, and outdoor spaces. Common examples are bee, butterfly, ant, spider, fly, mosquito, and worm. These words are usually short and frequent, so learners hear them in ordinary speech, nature descriptions, and children’s books. English speakers often use them with simple location phrases, such as a bee on a flower, ants on the ground, or a spider in the corner. Some of these animals are noticed because they move quickly or appear in groups.

flyantmosquitospiderbutterflywormbee

---

An ant is a tiny insect that often lives in groupsA bee is a small insect that makes honeyA mosquito is a small insect that can bite peopleA fly is a small insect that moves quickly in the airA butterfly is a colorful insect with large wingsA spider is a small creature with eight legsA worm is a long, soft creature with no legs

Small creature words for everyday vocabulary

Word	Definition
bee	A bee is a small insect that makes honey.
butterfly	A butterfly is a colorful insect with large wings.
ant	An ant is a tiny insect that often lives in groups.
spider	A spider is a small creature with eight legs.
fly	A fly is a small insect that moves quickly in the air.
mosquito	A mosquito is a small insect that can bite people.
worm	A worm is a long, soft creature with no legs.

Scramble

English uses special group nouns for animals. A herd is a group of large animals such as cows or elephants. A flock is a group of birds or sheep. A pack is a group of wolves or dogs. A pride is a group of lions. A swarm is a group of insects such as bees. A school is a group of fish. A colony is a group of animals or insects living together in one place. These words connect with places where animals live, such as a jungle, forest, desert, ocean, river, farm, or polar region. They help learners describe animals in their natural environment, which also supports Categories: Animals and Habitats.

schoolpridepackcolonyflockherdjungleswarm

---

A swarm is a large group of insects moving togetherA school is a group of fish swimming togetherA colony is a group of animals or insects living in one placeA flock is a group of birdsA jungle is a hot, thick forest with many plants and animalsA pack is a group of animals like wolves or dogsA pride is a group of lionsA herd is a group of large animals that stay together

Animal group words and habitat words

Word	Definition
herd	A herd is a group of large animals that stay together.
flock	A flock is a group of birds.
pack	A pack is a group of animals like wolves or dogs.
pride	A pride is a group of lions.
swarm	A swarm is a large group of insects moving together.
school	A school is a group of fish swimming together.
colony	A colony is a group of animals or insects living in one place.
jungle	A jungle is a hot, thick forest with many plants and animals.

Scramble

Animal vocabulary often includes body parts and movement words. Common feature words are fur, feathers, wings, and tail. Movement words include run, fly, swim, and crawl. Some animals have a special sound word too, such as roar for a lion. English usually places these words in clear patterns, such as subject + verb + place, as in The bird flies over the tree or The snake crawls on the ground. These words are useful for Describing Animals: Features and Behaviors, where appearance and action matter together.

furswimwingsfeathersruntailroarfly

---

To roar means to make a deep, loud soundTo fly means to move through the airFeathers cover birds and help them flyA tail is the part at the back of an animal's bodyFur is the soft hair on some animalsWings are body parts that help birds and some insects flyTo swim means to move through waterTo run means to move quickly on land

Animal parts and movement words

Word	Definition
fur	Fur is the soft hair on some animals.
feathers	Feathers cover birds and help them fly.
wings	Wings are body parts that help birds and some insects fly.
tail	A tail is the part at the back of an animal's body.
run	To run means to move quickly on land.
fly	To fly means to move through the air.
swim	To swim means to move through water.
roar	To roar means to make a deep, loud sound.

Scramble

English often uses different words for male, female, and young animals. A bull is a male cow, a cow is a female, and a calf is the young animal. A rooster is a male chicken, a hen is a female chicken, and a chick is a young chicken. A stallion is a male horse, a mare is a female horse, and a foal is a young horse. Some animal plurals change the same way in all contexts, but fish usually stays fish for one or more animals. Fishes appears only when talking about different kinds of fish, as in the fishes in the aquarium.

fishmalecalfbabyfishescubfemale

---

The word fish is often used for one animal or for many animalsThe word baby is used for a young animalThe word female is used for the animal of the other sexThe word cub is used for a young animal such as a lion or bearThe word fishes can be used for different kinds of fish, especially in formal writingThe word male is used for the animal of one sexThe word calf is used for a young cow or elephant

Regional and form based animal word differences

Region	Variant	Definition	Example
Global	male	The word male is used for the animal of one sex.	A male lion protects the pride.
Global	female	The word female is used for the animal of the other sex.	The female elephant stays with the herd.
Global	baby	The word baby is used for a young animal.	A baby sheep is called a lamb.
Global	fish	The word fish is often used for one animal or for many animals.	I saw one fish in the tank.
Global	fishes	The word fishes can be used for different kinds of fish, especially in formal writing.	The river has many kinds of fishes.
Global	cub	The word cub is used for a young animal such as a lion or bear.	The cub stays close to its mother.
Global	calf	The word calf is used for a young cow or elephant.	The calf follows the cow.

Scramble