How does a male cat recognize his offspring? How can he sense whether a certain offspring is not his -- and he therefore kills it? *** Practical problem: We have a situation at our house: The neigbour's cat has kittens in our shed; there were four kittens in the beginning. There are altogether some 10 cats in our street, 3 males and 7 females (+ 2 castrated males), not counting occasional visitors. One of the 3 males is really big and aggressive, and he wishes to rule the territory. I don't think that the kittens in our shed are his though, they don't look so. I think he knows about them, already for a week or so, but he hasn't killed them. Yet two kittens are missing! What is going on?