Island man, I understand your pus evolution traits selection argument, and do not disagree as Wolves are violent predators that are always getting kicked gored or bitten on top of their heads which they use to attack. Then a pack member cleans the would to keep the pack healthy and strong.
What you are not taking into account is in 1, ONE, generation a mouse was accustomed to pain coming from cherry blossoms and that this reaction was passed to all offspring. The means by how such a thing is stored in not known. Furthermore all you are explaining is the why of this happening. I am asking not why as I agreed, I am asking how.
http://reset.me/story/science-proving-memories-passed-ancestors/
PS. If you knew you would be teaching not reading and reposting nonsense on the net.