Not neutered male cat trying to mount spayed female?

Hmm yeah that can definianally hurt her, try putting them in different rooms when you aren't there and watching so he dosnt when u are... Until u can save up money to get him fixed because if you do it will help.. Where I live for my male cat the average it costar was about 200$ at a nice vet and about 135$ at a cheap one... Without the shots and boosters which are required here.

My neutered male cat, Purr-C, chases after Pinky, a spayed female, and mounts her. This happens almost every day. I haven't looked closely enough to see if he has an erection. He bites her neck and mounts her. I just watch to see what will happen. Usually, after a couple minutes, Pinky will get free of him and hiss at him. It's kind of funny, but I will yell at him to stop if he bothers her too much, because he's bigger than her. I have no idea why he does this. I just figure he was born a horny cat. My other male cats don't do this. Purr-C is quite a character.

He does it because he's not fixed, and his hormones dictate that he needs to get her preggers. It's also a display of dominance, so don't be surprised if he does it ever once in a blue moon even after he's been fixed.

Also note, to a certain degree she is allowing him to do this. When she's had enough, she should be able to kick him away without any intervention.

It'll stop when you get him fixed too

Yes, he can hurt her. Why don't you get him neutered????