Well I loaded mine up with a bunch of stuff and now its gone? not sure how to get it back is there a way to summon it or something?

It may have died. Try checking recent hostile areas you were in. Those pets really aren't worth the trouble, just leave them in your house and use them as containers.

i have not left town yet, so it got stuck or something somewhere. had some really good stuff on it too


Edit: I think I just lost all that stuff, the last place I saw the rat was in the throne room and hes not there. Had both of those epic weapons on him I needed to kill Dagoth Ur with