Sure, but no one is saying they do. Pigs don't deserve the right to vote and cows don't deserve the right to a public education.

But I am asking why its okay to harm them? If you cut them, they bleed, scream, flee, possibly attack in retaliation. All the same responses humans have. It's reasonable to assume animals feel pain similar to humans.

Is the only reason you don't harm other humans is because the government says those other people have rights? Or is there perhaps an ethical reason in which why that would be wrong?

What situations exactly are okay to cause pain in another for your own pleasure?