That's true, I should have been more careful with my use of the word "rights." What I meant regarding free will was whether or not they'd have all the same rights as a human. The Animal Welfare Act I think is a good example of where we convey a more limited set of rights to things which can experience pain, but don't have free will*.

• This is obviously all super debatable and opinions vary, but I think there are at least a decent chunk of people who believe humans have free will and animals do not, Descarte being a famous example.