English language Is full of interesting idioms .You can find a lot of animal idioms .I am going to write about animal idioms consisting a rat ...
Rats and mice look similar -they are rodents. The biggest difference is the size. Rats are larger and heavier while mice have smaller bodies.
When you sad that someone Is A RAT you actually mean that the person Is bed,evil and dishonest.
Look like a drowned rat
To be very wet, especially because you have been in heavy rain.
The rat race
If you say you want to get away from the “rat race”, it means you want to leave the stress of society and dishonest people or situations.
To smell a rat Is often used idiom meaning that you start to think that something Is wrong about current situation.For example;
He dissapointed me.I smelt a rat and left him.
If a person Is very drink it Is Said je Is Rat-arsed.
To rat on someone Is an idiom meaning to tell the police that someone has done something bad.
Like a rat up a drainpipe
If something is moving very fast, you can also say it is moving like rat up a drainpipe.
Source -internet,own knowledge and some ideas From Hot English Magazine