Hello,I am am currently visiting my mother for the month. My mother has a small dog, two indoor cats, and two outdoor cats. The Two out door cats at related, one is the uncle of the other. The oldest one is about 3 years old, and he is massive...a truley big cat. The other cat also male is about 1 year old. The younger one, I actually tamed last year when I was visiting my mother. Both cats are as friendly as can be to both me and my mother now but not so to each other and it keeps getting worse the older the younger cat gets....which is to be expected. Saturday mourning, me and my mother were getting ready to go to a relatives house for the night. Just as we were about to leave, the older male cat came walking up, I noticed he had a gash under his chin. Now the older cat is always instigator in the fights so I said "Ha Ha, looks like the little fellow got one in on you this time". But just as I got the words out of my mouth, I looked up and saw the little cat and he was in BAD shape. He had a huge chunk of flesh missing from his back, just up from his back hip and slightly on his right side. He was also limping on his back right leg. As soon as the older Male cat saw him, he ran over and jumped on him again. I ran over and got the big cat off and ran him away. The young wounded cat went into a nearby barn and laid on some straw. My mother has a large pet carrier and we filled it with straw and tried desperately to get the cat to go in. He even bit and scratched my mother when she tried to lift him. We had no choice but to leave him. I created a barricade out of what ever I could find and put a tarp over the barricade to hopefully keep the older male cat away from him while we were gone. I thought about the little cat all day Saturday and was anxious to get back to see about him. As bad as he was, I was convinced he would be dead and I would be burying him. We got back Sunday afternoon and the first thing I did was go and check on him. Before I even got too him, I heard him meow. I was so amazed he was alive. I took a piece of chicken and this time was able to lure him into the pet carrier. I then bought him inside my mothers house so the other male cat could not bother him. I also fed him some cat food, gave him some water, and his favorite milk. Yesterday mourning, I woke up and his back right root is HUGE. I have never seen any body part swollen so much. He is moving around which I suppose is a good sign and sleeps a lot but he can't put pressure on that back right foot. He also is eating and while I have not seen him drink any water, he has about two cups of milk over the last two days. My mother works for a wildlife center and one of her co-worker use to work for a vet. She recommended we put Neosporine on the wound which we did...we didn't touch it just filled in whole with it. Late yesterday I started noticing a smell coming from the cage. I looked and saw were the cat had used the bath room and figured this was the source of the smell.This mourning, shut all the inside pets up and let the little cat out in the house while I cleaned the pet carrier and replaces the straw in it. He was walking around the house and seems to be in good spirits. He came up to me and sat down at my feet and started rubbing his head against me wanted me to rub him. However, in rubbing against me, I started noticing that the bad smell was following him. I am now convinced that the smell is coming from his huge open wound which probably means infection. I am honest not surprised that the wound is infected based on how large it is. I can't talk to the cat and ask it but it doesn't seem like the open wound bothers it that much, the foot which is still badly swollen today is what is giving it problems. I have put more Neosporine on in the wound today but am wondering if I should try Hydrogen Peroxide. I know HP will burn and probably cause the cat to freak out so I am hesitant.I know what you are thinking, why not take the cat to a vet. Well, my mother already has two indoor cats and doesn't want anymore. We could take the cat to the vet and pay a lot of money to get him fixed but the older male cat is there here outside. We are afraid that if we spend a lot of money which neither of us has on a vet trip for the cat that this will just happen again. So I really want to try to treat the cat myself but this smell really concerns me.Any tips or advice would be greatly appreciated. This little Cat holds a special place in my heart because he is so friendly and I am the one who tamed him. If my building would allow pets, he would be living with me right now. I really, truly want to help. him.