Significance of Nonhuman Animal Consciousness

It is undeniable that many animals have some cognitive abilities, and are conscious to some extent of their surroundings and actions, but what significance does this knowledge have in terms of human treatment towards animals? It may seem amazing that an animal can crack open a nut through the same means over and over, or draw termites out of a tree with a stick, and then eat them off of the stick, but does it only seem amazing because they already appear so inferior than humans that any cognitive ability we observe from them makes us amazed? Is it really more amazing than the fact that they actually exist? I'm not sure any of these cognitive abilities we observe in them warrents any change humans treatment towards them. Of course I am assuming that they receive the general concern and care that they deserve by being living beings, and there is certainly a lot of unwarrented cruelty towards animals. I am referring mostly to consumption of animals for food as warrented human treatment. Come to think of it, this may be the only issue that I'm not sure should change given any recognized cognitive abilities. Whether it is known they have consciousness or cognitive abilities or not, I do not think animals should be subject to experiments, hunting for sport, or stolen from their environment for the entertainment of humans, apparent in zoos and circuses. I consider these acts of cruelty that no living being should be subject to, given the possibility that they may be consciously harmed from such actions. However, if a pig is known to have fairly highly advanced cognitive abilities relative to other nonhuman animals, I see nothing wrong in killing it for food if it will provide sustenance to humans.