Cats stalk, chase, sneak, pounce, swat, kick, scratch, ambush, attack and bite each other—all in good fun. If they're playing, it's reciprocal. They change roles frequently. Their ears are typically forward in play, their claws may be out but they don't cause damage, and their bodies lean forward not back.

What are cats doing when they fight?

Cats that are play fighting tend to take turns, letting one cat be at the bottom of the wrestling huddle and then the other. They might even take brief breaks to rest. If your cats' bodies are relaxed or their ears are pointed forward, they're likely just playing.

How do cats start a fight?

This might happen if two cats are sleeping peacefully next to each other, then hear a loud noise. Both cats get scared, jump, and puff up into defensive postures. They see each other puffed up and fear the other is attacking. This could lead to unease and fighting until they figure out they're still friends.