Hi, I recently purchased a home. And the previous owner left 13 cats outside .some are friendly and some are shy. We were able to relocate 5 of them. There are two kittens and I'm not sure who the Mom even is..they are always alone. Well tonight I heard one screaming and I went out and a big cat that I haven't seen here before was biting the kitten. I scared it away and at 1 a.m. I heard it screaming again..the big cat was back! I brought the baby inside and she was so scared crying and hiding..she wanted back out with her sibling so as much as I didn't want to I put her back out.. and then the screaming started again and I looked out the window and the big cat had her by the neck biting her really hard..I made up my mind to bring her inside but I can't catch her now. I can't go to sleep knowing the kittens are going to be in danger! How can I get this cat to stay away?!