This last summer we got an 18 month old male Beagle from an elderly lady who could not care for him any longer. We are in the process of housebreaking him and things are going well except he wants to go out every 2-4 hours. Every night I have to get up in the middle of the night to let him out so he does not pee in the house. I am afraid that if I don't give him a lot of opportunities to go out, he will pee in the house. How can I make him hold it through the night? He has been to the vet and he does not have a bladder infection, uti, etc. Is he just used to going out all the time to go pee and doesn't feel that he should have to hold it? Please help! Thanks!