I just adopted a 1 and 1/2 year old Mastiff lab mix from a rescue shelter. He has a past, he was adopted and then taken back (he is a 73 dog pound) because he knocked down a little kid while playing. My boyfriend and I fell in love with him and adopted him. He is sometimes a calm dog, others not. He pees EVERYWHERE in the apartment and even poops. He likes to bite our ankles and hands especially. Whenever we leave him to go out, we leave him in a crate. He has escaped TWO times, UNLOCKED our front door and has been running around the apartment building. We have had to come home from work to take care of him because of phone calls that he has gotten out!!!! I have no idea what to do- I have only had him for for 5 days. My apartment complex is pissed- Is this normal?!