I think herd mentality is a good thing overall. Because if every sheep had to figure out the velocity of the wolf and their personal risk, that would take forever.
The Stone Age gave us arrow heads and eventually knives, and that allowed us to kill animals in ways you couldn't before, and once you had them you were able to remove the skin and bones.
The beef industry has contributed to more American deaths than all the wars of this century, all natural disasters, and all automobile accidents combined.
If we studied human beings which can include human genes, human blood samples, and human behavior, then you can leave the animals out of the labs and you can leave them off your plate.