I have a six month springer called Harry. He is good as gold at going to bed and he sleeps in the kitchen. He woke up about 4am for the first two months, recently he has been sleeping until about 6.30 or 7 when he cries to go out to the loo. This week though he has reverted to 4am. Any suggestions why he is doing this, he does go the loo but then he won't be left alone again so that i can go back to bed.