Where do you get you knowledge of natural behavior? Hunting programs on the Outdoors Channel? Because you are completely off base. And you do not have a "right" to defend yourself. You might have the freedom to do so if you can, but you have no right to a defense. If someone eats you in your sleep and you do not defend yourself they have not violated any of your rights.
You are also wrong about your rights. Your rights are bestowed upon you by your society. Do people in other countries have the same rights that you enjoy? If they are inalienable then they cannot be removed so they must.
My knowledge base of animal behavior comes from books. Old-fashioned, I know, but they seem to be comparitively reliable even today. I might ask you the same question, however. Are you aware that some wolf packs will abuse the omega wolf so severely that it is sometimes killed? Where's the base sense of right and wrong in that?
People in other countries do indeed have the same rights as I do. Sadly, these rights are not protected in some of those countries. Again, rights are not defined as self-preserving and I've never read or heard anything to suggest that they are.
You argue that if I do not defend myself from being eaten in my sleep, then my rights have not been violated. This suggests my rights hinge on whether or not I at least make the effort to defend them. If I'm interpreting your remark correctly, then many children who have been sexually molested did not have their rights violated because they put up no resistance to the creep who took advantage of them.