2. Not enough room to swing a Cat: Very little room to move.Your current location is small and cramped.
3. Cat got your tongue: Speechless or quiet.
4. Look like the Cat who swallowed the Canary: To look proud of oneself.
5. When the Cat's away the mice will play. Advantage will be taken of the absence of a person in charge or in authority.
Without supervision, people misbehave.
6. To let the cat out of the bag. To disclose a secret.
7. The Cat's pyjamas. Something superlatively good; top notch, first rate; attractive.
8. Rain Cats and Dogs: To rain extremely hard,heavy downpour.
9. Cat's Miaow: Top of the range.
10. Fat Cat: A person high up in the business world with a lot of money.
11. Curiosity killed the Cat: Warning about being curious.
12. Look what the Cat dragged in: Displeasure about someone's arrival.
13. More then one way to skin a Cat: There is more then one way to do something.
14. The Cat's Pyjamas (or Whiskers): Something considered outstanding.
15. Put (or set) the Cat among the Pigeons : To add a comment or make someone aware of a fact that will ensure the outcome is that a fight or trouble erupts .To pit enemies against each other.
16. Cat-eyed. Able to see in the dark.
17. Play Cat and Mouse with: To play with, tease, or keep in suspense in an unkind way.