My son's 5th grade class dissected a pig lung last year....correction - I dissected a pig lung...... it was one of the coolest things I've ever done! We took a straw and blew air into the tissue to see how the lungs expand........ it was absolutely amazing..........
We're doing a number of dissections this year...way cool!
Had a difficult time in high school biology with the cute little chicks being used as test subjects for whatever poison we hypo'd into them.