I took both Human Physiology and Animal Physiology in undergrad. I learned similar principles in both classes. For the most part, physiology is the same all around. Animal phys was interesting because I was able to learn some different things that help animals survive.
When I was pre-med I thought taking classes such as anatomy, physiology, neurobiology, mechanics of human movement, etc would help prepare me for undergrad. While having a baseline fund of knowledge made studying for certain classes in med school easier, it did not mean I could give the subject material a once over and expect to do well. I knew quite a few people who would say "I was a biochem/neurobiology/anatomy major in undergrad so this will be easy for me" and end up doing not as well as the rest of us because we put forth more effort to learn the material well.
You will all take the same courses in med school regardless of your undergrad experience. If I could do it again, I'd take less of the classes I thought would help prep me for med school and take some other interesting classes I would never get a chance to experience again.
The only class I heard any of my classmates wishing they had taken in undergrad to help in med school is anatomy.