Primate

Ben, most people would turn you away

Young chimpanzees are adorable: cute and smart as the dickens. Not monkeys but apes, they grow up into adult primates fully capable of ripping a grown man’s arm out of its socket if they get angry, feel threatened, are frustrated / thwarted or some combination thereof. And given that chimps are at least as intelligent as a young human child, that is one bad combination. Remember the worst tantrum you ever saw a five-year-old throw? Not pretty, but also not abetted by fangs and an awful lot of muscle.