I read that personailties differ a great deal between male and female cats as they grow. While they may play together as kittens, as they mature, the male cat will still want to "rough house" while the female may be more stand-off-ish. If you want your cats to play together well as adults, they should usually both be about the same age and the same gender. That your cats aren't playing well together may be attributed to this.Bean said:I'm confused by this too. Julia is aggrivated by Moby, and Moby tries to play all the time (ending in Julia hissing at him). But sometimes after he leaves she chases right after him (and it ends with her running away hissing).