What does it mean that cats come to poor families and dogs come to rich families?

Cats come to poor families, dogs come to rich families, which means that when stray cats enter the house, the family will be poor, and when stray dogs enter the house, the family will be rich.

There has always been a folk saying that "cats come to be poor and dogs come to be rich", which means that it is ominous that stray cats will automatically come to a family, and this family will become poor and stray dogs will come to be rich. So most people are willing to adopt stray dogs, but they are unwilling to take in stray cats.

In ancient times, this statement was reasonable, not superstitious. In ancient times, the rich lived in brick houses with floors, while the poor lived in adobe houses without floors. The house is full of rat holes. When there are many mice, cats will also come to visit. Rich people often eat meat, and dogs have smart noses. So the dog ran to the rich and waited to eat the bones, so there was a saying that "the cat came to the poor and the dog came to the rich"