Hello, (sorry this is long)
So since Shermie was a kitten I have been taking him up to my parents' house when I go. My mom has a cat too - Frisky. When I first started bringing Shermie up, I kept him separated from Frisk. Then my cousin came to live w/ my mom for a while bringing her kitten, Salem. They kept Frisk and Salem separated for a while also. However, it seemed that Frisk - a senior cat - started to be able to tolerate Salem. Then when I brought the kitties up for Thanksgiving, it seemed that Frisk also tolerated Shermie. Shermie was gregarious and friendly and tried to play w/ her, but mostly they stayed out of each other's way. (Luna usually just comes up and hides).
But recently (Shermie has just turned a year old) When I bring Shermie up, he growls and hisses while walking around (sometimes when Frisk isn't even in his line of sight). Even when he's separated from her he'll growl, hiss and do this half growl/half chirp sound. He doesn't seem terribly stressed out as he doesn't hide, run around crazily, attack Frisk or even poof-up his tail. The only time he seems to freak out is when I pick him up (and normally he likes being picked up) then he'll do the growl sound and the chirp sound and struggle to get down.
Why this sudden change of behavior? Is there anything I can do to insure that the two will at least tolerate each other? It is important that the kitties can come to my parents' house b/c I live alone, sometimes house-sit for them and they are my outlet in an emergency.
So since Shermie was a kitten I have been taking him up to my parents' house when I go. My mom has a cat too - Frisky. When I first started bringing Shermie up, I kept him separated from Frisk. Then my cousin came to live w/ my mom for a while bringing her kitten, Salem. They kept Frisk and Salem separated for a while also. However, it seemed that Frisk - a senior cat - started to be able to tolerate Salem. Then when I brought the kitties up for Thanksgiving, it seemed that Frisk also tolerated Shermie. Shermie was gregarious and friendly and tried to play w/ her, but mostly they stayed out of each other's way. (Luna usually just comes up and hides).
But recently (Shermie has just turned a year old) When I bring Shermie up, he growls and hisses while walking around (sometimes when Frisk isn't even in his line of sight). Even when he's separated from her he'll growl, hiss and do this half growl/half chirp sound. He doesn't seem terribly stressed out as he doesn't hide, run around crazily, attack Frisk or even poof-up his tail. The only time he seems to freak out is when I pick him up (and normally he likes being picked up) then he'll do the growl sound and the chirp sound and struggle to get down.
Why this sudden change of behavior? Is there anything I can do to insure that the two will at least tolerate each other? It is important that the kitties can come to my parents' house b/c I live alone, sometimes house-sit for them and they are my outlet in an emergency.