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Well don't bother to take it off then to show it. What diameter are the trees right now?
James of course they chew on bark, they are rodents and are suited to that. Their teeth keep growing like a beaver and they chew it to help wear them down, otherwise they can curl around and impale their skulls. Besides that they can digest the softer part of the bark.
http://www.google.com/url?sa=i&rct=...bvb4WrDEsGIPCiWpOhldoLJA&ust=1394815566457992
James of course they chew on bark, they are rodents and are suited to that. Their teeth keep growing like a beaver and they chew it to help wear them down, otherwise they can curl around and impale their skulls. Besides that they can digest the softer part of the bark.
http://www.google.com/url?sa=i&rct=...bvb4WrDEsGIPCiWpOhldoLJA&ust=1394815566457992