#cat relations

One's almost four years old and the other is almost two. They seem to hate each other.

The younger one seems to be the main starter of their fights (although elder seems to start a couple too). Elder has a safe room but Younger keeps trying to enter it. When he does it causes stress on Elder. She also seems to be afraid to leave this room.

The thing is, it's an un clean room and I'm not allowed to clean it (it's not my room and while not directly told I can't clean it I have been told "I'd rather you not). Elder stays in it almost all the time. And she doesn't seem to be doing good mentally.

If it's just Elder she's a sweet cat. She usually won't be a lap girl but she'll lay next to you and purr. She loves watching videos and listening to podcasts and things like that.

If it's just Younger he's a butthead but a sweet but head. He'll lay down with you and get jealous if you don't give him all your attention.

We have a total of eight cats and they both get along with the others pretty much fine. Younger some times wants to play with our eldest cat (nineteen) while he just wants to sleep. So it's not that neither of them just doesn't get along with other cats.

We adopted Younger a couple months ago along with his brother. They're a bonded pair and their previous parents are having to try to get rid of their animals for reasons that aren't mine to tell. I don't want to have to give Younger and his brother back, since I don't know what'll happen to them. But Elder doesn't deserve this.

I want her to be able to walk around her own home without being afraid of Younger.

I have tried calming collars. Younger likes to strip his off and Elder seemed to have a reaction to it and her breathing got weird.