Animals do not feel painas people do.
Firstly, they are simply dropped on the ground at birth and within a short period of time are up and running with their mom. No human can do that.
A couple of months later, they are gathered, roped, tied down, injected with vaccines, branded (burned), any horns are cut off and nubs burned, if male, the lower two thirds of their scrotum are cut away and their testicles pulled from their body. In every single case, when they are let go, they will jump up and run away, sometimes charge a cowboy. They will all walk off with their moms.
No human could endure that and walk away. THEY DO NOT FEEL PAIN LIKE HUMANS!!
Actually, animals do feel pain as acutely as we do. They react differently because an animal in the wild that lays around feeling bad gets eaten. That’s one big problem dealing with prey animals like horses and cattle. Unless you are really experienced by the time you notice that they are sick, it can be too late.