Based on the context and the answer, generate a question. 

Context: He would n't play at all , he ran from his tennis ball , and would hardly acknowledge the frisbee I brought him ( He used to be MAD crazy about frisbees ) . He 's gained weight , and was just ... not himself the whole time . It really made me upset , and mad that I ca n't have him with me .

Answer:

I live in an apartment that does not allow us to keep pets so he stays with a friend of mine



Why are you unable to have him stay with you ?