Hi, A colleague asked me to send this enquiry to Zooarch, since her own connection doesn't seem to work. "Dear all, I have got a question in Ask the Expert -pages in Finnish popular science magazine Tiede. The question is: Why head-butting bisons and rams don't get brain injuries? I am not able to answer to this question. is it so that the bone is so thick that it supperts head and brains properly? I guess someone on the list knows the answer? best wishes, Kristiina Mannermaa" Dr. Pirkko Ukkonen Research assistant Lund University Dept. of Archaeology and Ancient history Historical osteology P.O.Box 117 SE-221 00 Lund Sweden tel.: +46 (46) 222 36 20 email:[log in to unmask]