AJ, there's a term you need to be familiar with. "Failed foster" Z sounds a lot like my female Border Collie, she is a failed foster. Oh, I found her a home, but the adopters weren't amused when she came in with their cat in her mouth. The cat was fine, but she came back..... and never left again. She's my second failed foster, I 'fostered" the last one for 13 years......