inauspicious dream; nightmare

predictive dream; dream that tells the future

(historical) Tuyuhun (A powerful Mongolic kingdom established by nomadic tribes related to the Xianbei in the Qilian Mountains and upper Yellow River valley.)

panda / Abbreviation of 熊麝香猫.

everyone and their dog; literally “cats and ladles too”

to give something valuable to someone who does not understand that value: to cast pearls before swine

a Schrödinger's cat

(idiomatic) tiny, not enough room to swing a cat; literally, “a cat’s forehead”

(neologism) Cat ears, as worn or possessed by a human or humanoid.

setting a wolf to mind the sheep; fox in the henhouse