I just started having alittle bit of a problem with my shepherd pup (5 months) he started peeing sometimes when he is excited sometimes if someone new is around (great temperment) to pet him. sometimes if I take his colloar to put him out when he wants to stay in. Any idea on whats going on and how to correct it. Help I need CESAR (ha ha) Any advice would be great. Other than that he is the greatest dog and super smart!!!