I think that all animals should be somewhat treated the same. Why? Because not all animals have feelings. For example, if a dog starts chasing you you're not going to treat it the same as if a venomous snake was chasing you. So, not necessarily all animals should be treated the same.
In my opinion, I don't think we should test on animals because it's just such a heartless thing to do. Even if it's to save 1,000,000 lives, it wouldn't be worth it. Many of those people have done harm to animals so why would it be a good thing? Just something to think about.