My rabbit Oedipus Rex ( a 7 month year old lionhead) is "litter trained" however he seems to pee over the litter box corner constantly?and we don't know what to do anymore? does anyone have a solution to this problem? or does anybody else's rabbit do this? thank you guys! We have also tried to use a variety of different litter boxes but each time he pees directly over it but yet still is on top of it?