[header] How to cut a rabbit's claws [title] Inspect your rabbit's nails. [step] All rabbit's nails grow at different paces, so there isn't a concrete rule on how often nails should be clipped. Generally you should inspect your rabbit's nails once a month. 
If the nail curves at all, it is too long and it needs to be clipped. If you can hear your rabbit's nails hitting the floor when he hops, this is another indication that it's time to clip his nails.