My parents did this the other way. My sister had her second chils and it became apparent that both of their children were very allergic to it, so they wanted to give their dog to someone, even though they really loved him. Well, I did too so I asked them if they could take him. He died this year and still, after 7 years later, they were callim him "their" or "your sister's" dog as I told them he was dying. "Call your sister so she can say goodbye to her dog" oh fuck off