Rex don’t require much grooming, and rabbits are fastidious cleaners. However, they will molt, or shed, twice a year. During this time provide them with a couple of fresh pineapple chunks every day. This helps to avoid “wool block” where the hair slows digestion.
Rabbits' nails must be trimmed every 4 weeks. Use cat nail clippers and have some corn starch ready (in case you accidentally trim too far down and they bleed). Failure to trim nails regularly can result in sore hocks for your rabbit, which are similar to bed sores.