Could also be that the similar genetics but long separation have them thinking of her as not part of the household yet somehow “smells” too similar and it bugs your cats out. Cats, dogs and even fish have Major Histocompatibility Complex genes just like we do.
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Wooly@lemmy.world 11 months agoHad they every met before? If cats grow up together of course they’ll be nicer/more familiar.
flow@lemmy.world 11 months ago
thebestaquaman@lemmy.world 11 months ago
Kittens typically aren’t given away before they are a couple months old, so they most probably met each other.
Either way: I’ve seen this in action. We had a cat that had kittens, and we were unable to give away one of them. When the kitten started growing up the mother started harassing it, eventually to the point of chasing it off. Luckily we found out that it moved in with some people a couple streets over that were very happy to have it. The point is: Cats aren’t pack animals, and typically don’t like sharing their territory with other cats, even if they are related.
emergencyfood@sh.itjust.works 11 months ago
I think it varies from cat to cat. There’s a mother-daughter team here who hang around and even gang up on other cats. Also, siblings almost always get along.