The bunnies like to keep themselves clean & tidy most of the time.  A bunny who cleans themselves is usually a well bunny. If you ever have a bunny who isn’t looking good but you’re in two minds just how sick they are. Generally, if they clean themselves they’re not feeling too sick, it’s a good indicator.  However, that said you must monitor any bunnies you suspect are not quite right & if in doubt take them to your vets.