my bunny is jumping really wierd... he jumps up and then twists in the air if that makes sence.. he somesimea also does it while jumping forward so that he kin of face plants.. what is wrong? should i take him to the vet? he also suddently lays down at times as if his legs dont work anymore... does anyone know what is happening? this only happens when i let him out of his cage in the morning... should i stop letting him out?