Beverly Rycroft said this quote

This is what I find so strange: we are not necessarily kind to animals. We use them, we eat them. But we don’t like them to suffer. Yet humans must. They have to wait for the great Vet himself to decide how long their anguish must last and how deep it must reach. And He has, as far as I can see, a habit of waiting a long, long time before deciding to end their misery.