The pretense that humans are superior to nonhumans is entirely unsupportable.  I have seen no compelling evidence that humans are particularly more "intelligent" than any other creature.  I have had long and fruitful relationshis with many nonhuman animals, both domesticated and wild, and have reveled in the bouquet of radically different intelligences - different forms, not different "quantities" that they have introduced to me, each in his or her own time, in his or her own way.
Similarly, I have seen no evidence that animals do not plan, do not remember, do not hold grudges, do not squabble, do not have communities, do not grieve, do not feel joy, do not play games, do not make jokes, do not enjoy challenges, do not have fun, do not have morals, do not feel or think so many of the things that are so arrogantly deemed to be human traits.  Indeed, I have seen all of these "human" traits in nonhuman animals.