I just moved from my family's old house which we are selling into an apartment with my cats. All but one adjusted beautifully despite the fact they had all lived in my house for basically their entire lives. My youngest, who is only 3 yrs old, did not adjust well at all. He was hiding & viciously hissing & swatting at both me & the rest of my cats who he has known his entire life! My simple presence would occassionally send him into a screeching fit that assuredly disturbed ALL my neighbors since it sounded like I was killing him! If I kept him in the bedroom alone for a couple of hours & then went in, & he would behave nicely to me & want attention, but seeing the other cats would immediately set him off again...I really don't have the space that I can afford to keep him away from the other cats all the time, not to mention moving about the apartment is extremely difficult with him & the other cats trying to enter each other's rooms. I temporarily brought him back to my old house to stay with my brother in the meantime. I spoke with the vet who suggested buying Feliway & putting him on Valium until I think he can adjust without it. I've been reading reviews of both & see each has very mixed results. I'm truly worried about what's going to happen, because if this does not work I would need to give him up to a shelter since I nor anyone in my family could continue to keep him after our house is sold. And if he's doing this badly in a new apartment where he's not kept in a cage & he's with things he knows, I can't even imagine how he would survive a shelter that definitely would not have the time or money to properly medicate & integrate him... Has anyone had a similar problem with their cat? Any advice? Does anyone know how much Valium is safe to give a cat?