I don't know what the heck you're talking about. Why is he being kicked out - why, if he's being kicked out does he have a dog i.e., why was he allowed to have one when he couldn't afford him/her and did he select the apartment he's to move into in October or did someone else?

If he has not harmed you personally, you should stand by him. Let him know that you love him and you're still there for him.

Since you didn't share why he was kicked out or why his friends abandoned him, there's not enough information for us to decide whether you should help him or not. I mean, if he was involved with drugs or something minor then keep in contact with him and make sure he is doing ok; help take care of his dog. If he murdered or raped someone, then call the cops and turn him in. Personally, I would probably disown one of my brothers if they committed a terrible act or crime.

Helping care for his dog , when he has to be away , is a great and helpful idea . I'm sure the dog will love you for it .