So I have had my glider for 5days and he seems to have a weird sleeping schedule and he was drinking really well the first day and now I never see him get a drink. He is a year and half, he is not aggressive and will jump to anyone. But he gets on my back a bites the same spot, at first is was soft but now he does it hard and if i wiggle he does it harder. He has been doing this for a few days. (the same spot every time) I am worried about his drinking and sleeping mostly.. any ideas?