My 5 year old mini Rex, Essie, has recently starting acting weird about peeing and pooping. She'll get in her potty and then leans her legs up and pees really high. Like almost over the guard high. Why on earth would she be doing this? Also she pees in the cage floor, she doesn't usually do that, though she is a messy bunny. And also recently she has been pooping everywhere in her cage.