Apparently you’ve never heard of a food chain. And I’ll just assume that because you’re a horse, you may not know that plants are alive too.

A grass and flowers can’t react with emotion, just like an unfertilized egg has no heartbeat and milk is just a liquid. That’s why we’re vegetarians, not vegans.

And everypony knows about the food chain. It’s what wild animals adhere to. We aren’t wild animals; we’re a civilized culture with a pharmaceutical industry capable of giving any creature whatever their diet requires to survive.