Today I put together a quarantine pen. Itâs 20 feet away from other rabbits. I wanted it to be in view of the other rabbits. I often have others feeding the rabbits and didnât want a rabbit in quarantine to get missed. I left space above for a fan for summer heat, as pictured on the other hutch. Come cold weather Iâll store bagged mixed grass over the rabbits to keep the grass dry and insulate the rabbits from cold and wind. Last winter I lost 1/3 of my dried grass when it got wet and molded.