I just adopted a (formerly) stray cat who just had four kittens in the bushes in front of my apartment. Of course, I brought all of the kittens in too. However, the mother cat has singled out one of the kittens, and has separated him from the litter twice now. When I tried to put him back, she layed on him, like she was trying to crush him. I assume something is wrong with that kitten, and I hate to let him die slowly, but if he is sick I also don't want it to infect the other kittens. I don't know what to do!!! Help!