The world lost the creators of two of its most celebrated bio-hoaxes recently: Douglas Herrick, father of the risibly ridiculous jackalope (half jackrabbit, half antelope), and Ray L. Wallace, paternal guardian of the less absurd Bigfoot. The jackalope enjoins laughter in response to such peripheral hokum as hunting licenses sold only to those whose IQs range between 50 and 72, bottles of the rare but rich jackalope milk, and additional evolutionary hybrids such as the jackapanda. Bigfoot, on the other hand, while occasionally eliciting an acerbic snicker, enjoys greater plausibility for a simple evolutionary reason: large hirsute apes currently roam...