My bunny is sweet and loves our new house because it has a carpeted room that he loves to run in. But since we moved he's been doing two things, One is tipping his litter box sending the litter everywhere and another is his pee stinks. He never stunk before and I could go half the week without changing his litter but now he stinks. He is not fixed. Is the litter dumping considered aggressive behavior? What happened to my sweet bunny? He is probably about 5 yo btw.

Is he fixed? Could he be "spraying"? Our bunnies sprayed until we got them fixed and it smelled horrible. Not sure what to do about the litter box, although I would suggest getting something heavier so he can't tip it. Ours used to tip their food dish, so we got a heavy ceramic dish and they don't tip that now.

Neutering helps with not only aggression but with the medical concerns with non-neutered bunnies, such as testicular cancer and other urinary hormonal issues. Non-neutered bunnies have stronger smelling urine as they get older, but it could also be dietary.