[thaumasiotes]

> there's a flock of deer with a single stag, surrounded by does. I knew I would feel awful taking out that single stag, leaving the does behind alone.

Assuming the deer were in such a social structure to begin with, they'll be alone for maybe a day before another stag steps up. Deer do not exist in a gender ratio of 6:1.

[Kovah]

Well, that might be technically correct. Yet it still doesn't feel good to destroy this social group they formed, to decide it's okay that this animal feels alone for that day. That's one of the points of the article as I understood it: is it ethical to play god and decide on that animals' fate?