0.o
Ummm,
For Xero, who was actually intrested and not just going "BUT DUDE I LIKE KILLING THINGS," you do have rights and your teacher should not make you fail. They might try to, but it's almost impossible for them to do it if you explain your rights to them.
Peta has a lot of information about your rights when it comes to dissection.
I remember owl pellets... We did those in 5th grade. At least those weren't alive.