Let's see...
In Grade 10 we did a frog. It was cool. Then in Grade 11 we did a fetal pig. My partners were so squeamish! I just grabbed the scalpel and said, "FINE! Give it to me, I'll do it!"
Then last semester at my new school (a special school for health science), we did a fetal pig again. We tried to get at it's brain, but the scalpel broke. oops! Good thing they were those dispo-scalpels. We also did a pig's heart. We were *supposed* to do a cow heart, but due to Mad Cow concerns it was decided to switch to pig. We were also scheduled to do a kidney (likely from a pig), but our prof said no. She told us that last year's group couldn't really make out the structures and it stank up the lab like urine.
I have seen "pre-dissected" specimens of cats and some human parts. We saw glass encased, preserved, sagittal sections of human reproductive systems. I.e. the waist to just at the upper part of the thigh. That was really interesting.