Some English animal idioms

Like most languages, in English animals are used in many idiomatic expressions.  we take a look at some basic, widely used, expressions:

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 Are you bull-headed?'  What does that mean?

Here are a few natural English expressions (idioms) using animals. Like most languages, in English animals are used in many idiomatic expressions.  we take a look at some basic, widely used, expressions:
 1.to pig out  : To eat too much:
Example:'I really pigged out at the barbeque. I've never eaten so much.'

2.to chicken out:To be too scared to do something usually after previously agreeing to do it:

Example: 'I was going to do a parachute jump, but I chickened out on the day.'

3.to be a dark horse : A person who keeps their interests and ideas secret, especially someone who has a surprising ability or skill:

Example: 'I didn't know that Sandra could play the drums. She's such a dark horse .'

4.to be a pussy cat: A person who is very gentle.
 Example:'Don't worry. He looks frightening, but really he's a pussy cat.'

5.to be bull-headed:This adjective is used to describe a person who is stubborn:
Example : 'Stop being so bull-headed and come to the cinema with us. Everyone is going except you.'

6.to be in the dog house:This expression means 'to be in trouble':

Example :'I'm in the dog house with my wife after I forgot out anniversary.'

7.to smell fishy:When a situation 'smells fishy' we think that it is dishonest or suspicious:
Example : 'My son's story smells fishy. He said that he'd been in the library all day, but I think it's closed today.'

8.to be a rat:This negative noun is used to describe a person who deserts his friends or associates, especially in times of trouble. Someone who is not loyal:
Example : 'Michael is such a rat. He left as soon as the trouble started.

9.to be like a bull in a china shop:When someone is like a bull in a china shop they act carelessly in the way they move or behave.
Example :'The footballer ran around like a bull in a china shop until he was sent off.'

10.to talk the hind legs off a donkey:This expression is used to describe a person who talks too much:
Example : 'Her speech seemed to go on for ever; she could talk the hind legs off a donkey.

11.To have ants in your pants :To be unable to keep still because you are very excited or worried about something.
 example :There's a test tomorrow, and he can't concentrate or keep still. He looks like he's got ants in his pants.

12.To badger someone: To pester someone into doing something.
 example:Don't let people badger you into having a drink. 

13. Bark worse than bite.Used to describe someone who makes threats but never carries them out

For example:Oh don't worry, he's always shouting at people, but his bark is worse than his bite.