A cat hieroglyphically represents false friendship.

A cat (hieroglyphically) represents false friendship, or a deceitful, flattering friend.

The cat (in heraldry) is an emblem of liberty, because it naturally dislikes to be shut up, and therefore the Burgundians, etc., bore a cat on their banners to intimate they could not endure servitude.

"It is a bold and daring creature and also cruel to its enemy, and never gives over till it has destroyed it, if possible. It is also watchful, dexterous, swift, pliable, and has good nerves thus, if it falls from a place never so high, it still alights on its feet; and therefore may denote those who have much forethought, that whatsoever befalls them they are still on their guard."

Fonte: Cats