I had AP Biology in high school and we had to dissect a cat. I did it, but in all honesty my partners did most of it. My teacher assured me that these cats were euthanized in a shelter due to over population. It helped a little, but I still didn't want to do it. My cousin was in the same class and didn't do it. She almost failed, but her dad talked to some people so she passed. We were told up front if we took the class that that was expected.