A wild goose chase.
A search for something that cannot be found.
Looking for something in a bird costume.
Doing something just for fun.
Looking for a goose.
The lion's share.
The majority.
The boss's duty.
The most important.
The bravest.
Take the bull by the horns.
Get on with doing a difficult task.
Go riding on a bull.
Compete against someone.
Fight a bull.
To cry wolf.
To raise a false alarm or over exaggerate a situation.
To cry a lot.
To shout loudly.
To howl like a wolf.
Elephant in the room.
An obvious problem that people avoid talking about.
An ugly object.
Something too big for the space.
A big person in the room.
Dog eat dog.
Live without caring.
You beat someone who is the same as you.
Highly competitive or ruthless.
To try hard.
Fish out of water.
Someone who can't breathe.
Someone who feels out of place in their surroundings.
Someone who is on land.
Someone who can't swim very well.
Kill two birds with one stone.
To hate birds.
To achieve two goals with on action.
To throw stones at targets.
To go hunting.
To let the cat out of the bag.
To release an animal out of a cage.
To win a competition.
To reveal a secret without the intention of doing so.
To gossip about something.
To make a beeline for.
To go straight for something or someone.
To run away from a bee.
To run after a bee stings you.
To make a buzzing noise for a long time.
Curiosity killed the cat.
Being too curious can lead to good things.
Being too curious can lead to trouble.
Cat got your tongue?
Why are you so quiet?
Why are you not eating anything?
To fight like cats and dogs.
To fight very noisily.
To fight a lot.
To look like the cat that got the cream.
To look dirty.
To have a satisfied appearance.
To rain like cats and dogs.
To rain lightly.
To rain heavily.
Every dog has its day.
Everyone can pass an exam.
Everyone can be rich.
Everyone succeeds eventually.
Everyone has the chance to be the boss.
