In cats, sibling rivalry can happen, but not the way we might think. ... Tolerating each other during the highly social kitten period, and learning manners from litter mates, all creates an atmosphere where even disparate kinds of cats still get along.

Do sibling cats get jealous of each other?

They also can get jealous of one another. ... Not all cats show jealousy in the same way, of course. Some “react by swatting, growling or hissing as they encounter their new 'rivals,'” Naomi Millburn notes. “Other cats aren't as direct in their approaches.

Is it normal for brother and sister cats to fight?

Why do cats fight? Territory: Cats are territorial animals and they will often fight to defend what they believe is their territory. ... Sometimes, they also dominate female cats. Your cat may need to act out their aggression by picking fights with their brothers and sisters or by causing a fight with a strange cat.