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50 English Animal Idioms

Animal idioms add color and vividness to English expressions. Learn these 50 commonly used animal idioms to sound more natural in English.

#1 Cat

Cat got your tongue?

Why so quiet? Cat got your tongue?

#2 Cat

Let the cat out of the bag

She let the cat out of the bag about the surprise party.

#3 Cat

Curiosity killed the cat

Stop snooping around. Curiosity killed the cat.

#4 Cat/Dog

Raining cats and dogs

Take an umbrella. It's raining cats and dogs.

#5 Dog

Every dog has its day

Don't give up. Every dog has its day.

#6 Dog

Let sleeping dogs lie

Don't bring that up again. Let sleeping dogs lie.

#7 Dog

Barking up the wrong tree

If you think I did it, you're barking up the wrong tree.

#8 Dog

A dog-eat-dog world

The business world is a dog-eat-dog world.

#9 Sheep

The black sheep

He's always been the black sheep of the family.

#10 Sheep

Pull the wool over someone's eyes

He tried to pull the wool over my eyes.

#11 Wolf/Sheep

A wolf in sheep's clothing

Watch out for him. He's a wolf in sheep's clothing.

#12 Wolf

Cry wolf

Nobody believed him because he cried wolf too many times.

#13 Horse

Hold your horses

Hold your horses! We're not ready yet.

#14 Horse

Straight from the horse's mouth

I heard it straight from the horse's mouth.

#15 Horse

Beat a dead horse

Stop bringing it up. You're beating a dead horse.

#16 Horse

A dark horse

She's a dark horse in this competition.

#17 Goose

Wild goose chase

Looking for that file was a wild goose chase.

#18 Bird

Kill two birds with one stone

I'll shop and visit grandma — kill two birds with one stone.

#19 Bird

A little bird told me

A little bird told me you got promoted.

#20 Bird

Birds of a feather flock together

They hang out together — birds of a feather flock together.

#21 Bird

The early bird catches the worm

Get there first. The early bird catches the worm.

#22 Beaver

Eager beaver

The new intern is a real eager beaver.

#23 Bee

Busy as a bee

She's been busy as a bee all morning.

#24 Bee

Have a bee in one's bonnet

He's got a bee in his bonnet about recycling.

#25 Bee

The bee's knees

This new phone is the bee's knees!

#26 Bull

Bull in a china shop

He's like a bull in a china shop at the meeting.

#27 Bull

Take the bull by the horns

It's time to take the bull by the horns and ask for a raise.

#28 Bull

Like a bull in a china shop

She rushed in like a bull in a china shop.

#29 Elephant

Elephant in the room

The budget issue is the elephant in the room.

#30 Elephant

Memory of an elephant

She never forgets anything. Memory of an elephant!

#31 Pig

Pig out

We pigged out on pizza last night.

#32 Pig

When pigs fly

He'll clean his room when pigs fly.

#33 Pig

Pig-headed

Don't be so pig-headed. Listen to others.

#34 Monkey

Monkey business

No monkey business while I'm gone!

#35 Monkey

More fun than a barrel of monkeys

The party was more fun than a barrel of monkeys.

#36 Monkey

Monkey see, monkey do

Kids copy everything — monkey see, monkey do.

#37 Fish

Fish out of water

I felt like a fish out of water at the formal event.

#38 Fish

There are plenty of fish in the sea

Forget about him. There are plenty of fish in the sea.

#39 Fish

A big fish in a small pond

He was a big fish in a small pond at his old company.

#40 Fish

Fishy

Something about this deal seems fishy.

#41 Snake

Snake in the grass

Be careful, she's a snake in the grass.

#42 Chicken

Chicken out

I was going to skydive but I chickened out.

#43 Chicken

Don't count your chickens before they hatch

Don't count your chickens before they hatch. Wait for the results.

#44 Frog

Frog in your throat

Excuse me, I have a frog in my throat.

#45 Crocodile

Crocodile tears

Don't fall for his crocodile tears.

#46 Ant

Ant in one's pants

He can't sit still. He's got ants in his pants.

#47 Butterfly

Butterflies in your stomach

I always get butterflies in my stomach before exams.

#48 Goat

Get someone's goat

His constant complaining really gets my goat.

#49 Goat

Scapegoat

They made him the scapegoat for the project failure.

#50 Rat

Rat race

I'm tired of the rat race. I want a simpler life.

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