Two notes...

First, anyone with a delicate stomach may wish to look away....

Eggs are not unborn animals. fertilized eggs are unborn animals, so if you raise your own chickens or (possibly, I ain't sure) if you eat free-range eggs, then you may be eating unborn animals. Otherwise, the process in chickens is just like in human women--the egg (as in that first cell) comes out of the ovaries, isn't fertilized, doesn't implant in the uterine wall (nevermind that in chickens it wouldn't anyway), and is eventually ejected along with other stuff.

And that's as detailed as I'm gonna get about what unfertilized eggs are.

Likewise, while cows (again, like human women) feel a great deal of pain if the milk isn't drawn out of their udders (most often, women who don't want to breastfeed take some kind of hormone that will stop the milk production--otherwise, if they don't nurse they'll be hurtin'...), milk cows are often fed hormones so that, basically, their body thinks they're pregnant or just-calved, and keeps producing milk.

ave you ever heard the origin story that God told us to live in harmony with the animals and to devour the plants and fruit?
To which I refer you to Genesis, Chapter 9, in which God allows us to eat animals--although blood is still not allowable. Other restrictions were later placed on which animals can and can't be eaten, but until then people were allowed to eat anything from cow to (theoretically) tiger.