Last week a co-worker told me that her daughter no longer wanted her five year old cat and that if I didn't take it, she would take it to the SPCA where it would be gassed in 30 days because nobody wants a five year old cat. So Rusty moves in on Friday. He's an orange tabby. My question is, do any of the HTF cat experts think there will be any problems between Rusty and our other three cats (ages 13, 10 and 7)? Our current three all get along very well -- sometimes we even discover one of them laying on top of another, licking each other in a very disturbing yet touching tableaux. They're usually pretty sedate, with intermittent friskiness. Rusty is supposed to be very even tempered (although I'm not sure I trust this woman completely). But I know our oldest two hate change -- when we have to take them to the vet, they are (literally) scared shitless to be taken out of the house. Anybody have any experience adding a new cat to a long-standing assemblege of cats? Should I introduce him slowly, maybe keep him in one room and introduce the other cats one at a time or something? Or just add him in and hope for the best?