I have 5 month old puppy named Hines. He has been great at night we even started leaving his crate open and when we go to bed he makes his way into his crate to sleep (crate is in bedroom with us). This was until about a week ago. He now barks at us non stop, jumping up on the bed barking at us, we put him in the crate and he just barks even more from in there. He is going through a teething phase right now, I am not sure if that has anything to do with his change in behavior but we leave him plenty of things to chew when we go to bed in case he cant sleep. I have been taking him for 3 walks every night and we play all night when we are not walking, so I don't think its just pent up energy. Needless to say it has been a long week and we have not had very much sleep. Any suggestions on how to get this to stop, or what may be causing this change in behavior?