Considering that chimps share 99% of our dna, thats just not so, we are scientifically classified as apes despite the horror experienced by religious types at the thought of that... in the apes, the great apes are: Chimps, Gorillas, Gibbons, Orangutans, and Us.... maybe biggie to, but he's closer to us than chimps as far as ability to not be discovered.
LIke it or not though there is other smart if not intelligence life on earth: Whales, Dolphins, Octopii and squid, and hive insects if you factor in hive mind intelligence. Leaf cutter ants farm the leaves around them for mulch for a unique fungus they essentially farm for themselves.