He's a very good cat, but things haven't worked out well between him and Gillian.
Iggy's about a year old, Gillian's about 10. Iggy's half again her weight, and probably more athletic.
So far as I can tell, Iggy was basically polite to her, but she went into a territorial rage. Sometimes things were better between them, sometimes worse, and eventually Iggy figured out that he was bigger.
Now Gillian's spending all her time in the basement. He's back to polite, including waiting for his food in the back of the basement (during the early stages when Gillian was on his case, he wanted to get some privacy with his food and preferred eating in the basement) while she gets fed in the front of the basement.
The thing is, I don't want Gillian stuck spending the rest of her life in the basement. If there isn't any way for her to make a better accommodation with Iggy, he's going up for adoption again. (I don't remember the details, but it would be with an organization associated with Pet Smart.)
Any suggestions? I like both cats, and would rather have both of them here. (Perse is the third cat. She gets along with both Iggy and Gillian.)