kitten behavior

File: kitten-plays-too-rough[1].jpg (169KB, 347x346px) Image search: [Google]

169KB, 347x346px

So here's the deal: my friend is a fucking retard who is incapable of caring for animals but he does so anyway and I need help fixing his shitty mistakes.

He had a stray (adult female) he had taken in and was offered a kitten. I told him the cat would hate it and that he didn't have the time to care for a kitten but he took it anyway. As an aside that stray cat is now stressed as fuck and constantly hiding to avoid getting attacked herself.

The kitten (male) was taken from its mother at around six-seven weeks. It was taken off nursing abruptly instead of weaning.

Because he couldn't be assed to kitten-proof his home he kept it in a closet for the first few months of its life. I also found out that he somehow thought a kitten should eat LESS than a normal cat so he was only feeding it twice a day. It was likely consuming its own feces.

Now the kitten is fed better and given full roam of the apartment, but it's completely un-socialized and aggressive. It will greet you normally then proceed to maul whatever appendage he was just marking (not play-bites, I've had to be very careful to continuously clean out my hands to avoid infection thanks to this little guy). It also likes to maul feet and the backs of heads.

I've told him to disengage with the cat entirely when it bites and to resort to a squirt bottle if it's absolutely necessary, but there's been zero behavioral change. I assume his training is inconsistent/nonexistent, but is there perhaps something more reliable?

tl;dr friend is a shitty owner with a shitty aggressive cat how fix