English idioms

[sunshine.water]

can you give me some idioms about cats?
Thank you!!!!!!!!

[Ouisch]

Cat got your tongue?
(Meaning: "Why aren't you talking? Your silence is suspicious.")

Look what the cat dragged in.
(Meaning: something that looks ragged or discheveled, much like a mouse that a cat has caught and partially eaten)

When the cat's away, the mice will play.
(Meaning: If no one is watching, people will misbehave.)

Let the cat out of the bag.
(Meaning: to tell a secret)