Careless rat chewing on a cat’s tail

Similar sayings:

All cats love fish but fear to wet their paws All cats love fish but fear to wet their paws
Dogs have so many friends because they wag their tails, not their tongues Dogs have so many friends because they wag their tails, not their tongues
Rats know the way of rats Rats know the way of rats
When the cat is gone, the mice come out to stretch When the cat is gone, the mice come out to stretch

Chinese sayings and proverbs