Are these at all acceptable or accepted by the hedgies if they are safe? My sons are concerned about our wheel not arriving yet, but I can't believe a hedgie could use a leash or harness. My oldest said that he thought the class pet at school had a leash. Wouldn't it be tough w/ the quills and getting it on??? My hunch is that the wheel wil be here soon and this will be a mute point. But, I said I'd ask, so please advise. I can't see walking the hedgie like our dog, but I deger to you experts!