To lots of cows/sheep/goats that have to be forcibly impregnated by humans or by socially inept bulls/rams/billies that physically/sexually assault said animals, to be forcibly separated from their offspring by humans upon birth to widespread emotional distress, to be forcibly maneuvered into a cage and hooked up to tubes for hours at a time to extract their milk (aka breast milk for baby cows/sheep/goats) for days and weeks and months on end, and to be forcibly killed at an early age by humans to extract all parts of the animals' corpses for human taste sensation or as protection from the environment (clothing).

Then, lots of humans get harmed during the impregnation/separation/killing steps above either due to the animals retaliating against humans, or due to humans getting injured from the machinery that processes animal corpses, or due to the illnesses that arise from working in environments that process animal corpses, or due to the illnesses that arise from living around environments that process animal corpses.

Lots of harm behind it that you don't see, and that's by design.