I think human and other species are both need to live and be permitted to be sufficiently free in the world, but that it is valid to attack them for self defens

I think human and other species are both need to live and be permitted to be sufficiently free in the world, but that it is valid to attack them for self defense or for food (not to be mandatory, but only permitted, if it is not endangered species), but not for other reason. There is over population, but over population is mainly the human over population I think, so that is the first thing to solve. However, I also think that you should protect yourself too, if is necessary to do so. Human is not (currently) a endangered species and should not be over protected compared with everyone else (but that does not mean it should be disregarded, either); however, you can protect your own children if needed to be (if you have any; I prefer to don't have any children, to avoid to contribute to such problem).