I've taken care of a male cat I named Smoky for 2 years now. He lets me and my family pet him but no one else. Months ago he brought a female to us named Lucy and they had a kitten. I believe the kitten is about 16-20 weeks old. Recently whenever Lucy is not around Smoky will randomly hold down the kitten and bite all over his neck and and back. The kitten adores his father and follows him around but when Smoky does this he looks kind of scared. I've seen them play before but this is different. The kitten usually sits and lets him do it but today he got away and his eyes were huge so he left for half an hour and came back when Smoky had calmed down. I've heard of male cats killing their kittens but usually this is when they are younger and our kitten is 16-18 weeks old. I'm really worried about the kitten but I can't watch them all the time and Lucy only comes towards sunset. Is Smoky actually going to hurt him and if he does in the future what should I do?