Yes, animals have feelings and are intelligent (to varying degrees, but generally a lot more then most think). Modern meat factories are absolute shit shows and it's outlandishly bad our societies treat the animals like that.
However, it doesn't have to be that way. And killing an animal for food which lived a nice life is perfectly fine. We're all part of the physical reality in which the survival of the fittest reigns supreme. Even if you want to put your head into the sand and deny this, animals eating each other is perfectly normal. And yes, humans are animals too.