Naw, they're not hard, and I think that Yoda is technically a Silkie? Though I think he might be half and half. I only met his mom at the rescue who is a silkie, so no idea who his daddy is! But no, since guinea pigs are naturally cleanly animals it's not too hard. Yoda is a drama-queen and hates being brushed though. sometimes their bum hair gets messy or since I've got two boys he gets (someone's) boar glue in his bum hair so i have to cut it out. But they're not too hard to care for they do most of the work themselves!