Reminds me of the Russian experiment that worked to prove that a selection process for behavior could produce domesticated foxes. An unanticipated side effect of the experiment after six or seven generations was that the foxes facial phenotype began to resemble dogs:

https://en.wikipedia.org/wiki/Domesticated_red_fox

https://en.wikipedia.org/wiki/Dmitry_Belyayev_(zoologist)#Be...