When I put my finger next to one of my cats, instead of nuzzling he’s started to bite and chew it. I don’t know why? He will sit and Starr at my finger then grab it and chew! And it’s not like he’s hungry, he’s got lots of food. Maybe he likes the texture of my fingernail. It’s not too painful, he’s not broken the skin, it just seems like odd behaviour. He used to rub his head against my finger or hand, but as I say this is now happening. Any ideas? Is it boredom, is it because he’s trying to be dominant? Do I think if I die he will be one of those cats that survived on my corpse? Help!