I'm not going to give a friend his dog back after he got out of prison.
What makes you want to keep the dog?
I want to become a breeder.
It is okay to get attached to an animal but it is wrong to keep one if it is not yours. They could try to use the law to get the dog back since it does belong to them.
They are probably in jail right now.
Well you should find out for sure. Either way it is wrong to not return the dog. You know that it does not belong to you.