[trace7]

Hi, just found this site so if do this wrong, sorry.
I desperately need advise on my cat's behaviour. I have 3 cats, 2 toms and girl. 1 tom is coming up to 3 as is his sister, both from same litter. We rescued a kitten last year and he is roughly coming up to a year old. Girl and kitten get on well but older tom has turned aggressive towards his sister , that is when he comes home. He has always come home every night (having always been a roamer) but for 3 weeks now we have seen him for max of hour over the 3 weeks. He is going to another house which has a dog . The elder tom has history of being stressed, he loses the fur around his neck when stressed, as he has now. This happened from when he got locked in garage early last year until we found him from searching the area. All cats have been neutered, elder tom and female always got on well but there has been noticeable change in elder tom's behaviour when he home, he growls hisses and just won't settle in the house. Both tom's tolerate each other (young tom wants to play and elder tom has played with him in past) Im desperate for advise as don't want to lose any of my cats but elder tom not getting on with either of other 2 cats now and very aggressive behaviour which he never had before. PLEASE HELP!

[tickle]

You can't rule out any medical issues. Maybe he is in pain and acting out aggressively because of it. How old is he ?

Tick