I've put my foot down on a two pet limit. Though we did have rats years ago, in addition to our 2 cats. I didn't care for the rat years.
Two pets? Were the rats pets, or just visitors. I don't think we've ever had just two pets. Current population: two people, 7 cats, two dogs (110# & 40#), two parakeets and a fish tank with maybe 20 fish. My wife wants a horse. I hope she keeps it outside.