I’ve received good tips here before. My wife and I have a 18 week and 9 week old little siamese kittens. The olderone weighs in at 3.1 pounds…and it getting very long…he’s going to be a large cat. The younger one (half sister to the older one) weighs in at 15 ounces. Ever since we got the little girl…a week ago…the older male is pouncing on her…grabing his neck and biting her…and generally acting like a little shit.
When will this end? they eat together just fine…when they are sleepy…they sleep near eachother…but when play time comes around the olderone can’t seem to get enough cries and pain out of the little girl!
Question: Is the male cat altered (neutered)?
Suggestion: Have him “fixed” and see if that clears up the aggression problem. The standard recommendation age for neutering male cats has been 6 months, but there’s a growing trend towards earlier neutering.
http://www.winnfelinehealth.org/reports/early-neuter.html
http://www.winnfelinehealth.org/health/early-spay-neuter.html
Kittens wrestle constantly. It doesn’t stop suddenly - play fighting tapers off as cats get older. The main problem here is the difference in size. The younger cat will eventually get big enough to defend herself. In the meantime, you will need to protect the smaller and weaker one. You can do this by removing the older kitten when he gets too rough, by putting them in separate rooms to give the younger one a break or by distracting the older one in some way.
Neutering won’t solve the problem. Eventually you will want to get your cats fixed, but neutered and spayed kittens still play like kittens.