First, do you now agree that animals like chimps (as shown in the links provided by @Witchdoc) are capable of surprising feats of intelligence comparable to humans, even if such feats are far and few in between?
Second, I get the feeling you implicitly referred to the chimp as “retarded” (because there is absolutely no reason to have used that word), but that is just bonkers or should I say retarded, because that chimp is clearly sane.