I have two young foster kittens who came in separately. The one was 3 wks
old when he was left at our vets office. He was flea infested and quite
underweight. He's a very active kitten now but is still small for his age.
The other kitten was found outside by herself. She was in pretty good shape
but was also separated from her mom and siblings (if any) far too young. I'm
guessing she was over 4 weeks old when I got her. I'm guessing that they are
about a week apart in age and the younger is actually larger than the older
one.  Both of these kittens end up wrapping their paws around your hand and
start nibbling and biting shortly after being picked up. I figured it was
the normal kitten fighting that they would do with siblings and thought that
maybe they would learn manners better from each other. I put them together
for a 'play date' and the wrestling began. They went at it for quite a long
time and then one of them started protesting and I separated them. Is this a
good idea? Should they be wrestling like this every time they are allowed
together? If they do engage in this every time they are together does it
just mean they don't like each other or maybe they should not be with other
cats?

Any suggestions would be appreciated. I don't want them to become biters.

W