Classical Chinese dream interpretations do not talk about the cat. I interpret the cat and cats are tigers, thus dreams about cats are dreams of tigers, a dream of very good fortune in Chinese dream interpretation because the tiger is considered a sacred animal, a symbol of a warrior and a courageous general in combat. In the classical Chinese novel All Men Are Brothers, killing the tiger (da hu) is a story about courage.
A pregnant cat indicates prosperity. A cat litter is usually a litter of multiple kittens. This is a very good dream that indicates prosperity.