Hello! I noticed in your sig that you cave a pet rat! I love rats, and i used to breed them for many many years. I am not allowed rodents where i am living right now, so i cannot have them. :(
What i wanted to say was, you need to get your rattie a same sex partner! They do best in pairs or groups, and will live longer with a playmate as well. One day for a rat is like a full two weeks, so think about if you leave them alone for say four or five hours, that is like being all alone for several days! D: