Stroke it, groom it, hold it and really try to find out why it's nervous. I know that if you have your rabbit outside then it may see a cat or something in the garden and be nervous.
Ears help rabbits to hear, of course! (But if it is arctic hare, even though it may hear better, it does not keep warmth inside.) Rabbits also use their ears to communicate with. They can move them...
rabbits have a white patch under their tail, in the wild if one see's danger, it runs and all the other rabbits will see the white flash of the tail and allwill run for cover. Also eye contact is a...