My first bunny that's neutered and in a month will be 2 years old and he started doing this since i got him which is when he was 4 months old and This can happen every 2 days is when he flops to his side his head starts going in circles it can go 5 or 10 times around then he will get up clean his ears and flop again like nothing happened and he eats and poops well but he also has a brother that does the same thing but not as often and i also have a other younger bunny that will do it every once in while and i just been wondering is it a head tilt. something else?. please if anyone has experience this with their bunny please share or if u know anything about this