Hi all. I live in southern calif and have three registered Ragdolls, margarita, mojito and jack. I have recently fostered a homeless cat, Blackie. I've been feeding him for some time and he's constantly been beaten up by another neighborhood cat. Last month he was limping and bloody again so I took him to vet. He was sweet and docile with me and I'm very attached to him and was just waiting till I could gain his trust before a vet experience. He needed antibiotics and I kept him in my garage to recuperate and then had him neutered. Another ten days in garage and he and I are totally bonded. Unfortunately he tested positive for feline immunodeficiency antibodies (FIV) so the vet says I should not let him live inside with my Ragdolls. I keep Blackie in garage at night and crack the door during dayin so he can get out. He never leaves property now. However another big cat that is probably the one who was beating him up has come and attacked him in my yard and I garage several times lately. I can't bring Blackie in and I don't know how to handle situation with the other cat. I fear poor Blackie will end up getting hurt badly again. Any ideas what I can do about the attack cat? I have a stucco wall around my backyard but he comes over wall. So far nothing scares him off. I'm installing magnetic cat door in garage but I suspect if Blackie goes out the attack cat will still fight him. Any ideas? Again, I CANNOT keep him inside as much as I would like to.