They definitely do, no doubt. I would think that would get rid of the students that just think they will be doctors but have no drive for it.
But I will never see biology as a harder major than mechanical engineering. Yes, I am biased, and yes John that got under my skin, but I don't see how that is true in anyway.
Bio is not an easy major though, I'm not saying that. Being in the STEM family means it has to have some difficulty.
A good friend of mine daughter just graduated from the University of Minnesota Vet School.
Talk there was that students that flunk out of Vet school become doctors.