| A 19th-Century engraving of the enigmatic but seemingly extinct izcuintlipotzotli |
Sometimes, tragically, by the time that a cryptid attracts mainstream scientific attention, it is too late - the creature in question has already become extinct. Certainly, for example, it may be too late to secure a specimen of a still-unidentified creature formerly reported from Mexico - the unpronounceable izcuintlipotzotli - because it has not been reported for more than 150 years.
This bizarre beast first came to attention in 1780, courtesy of a tome entitled Historia Antigua de Mexico ('Mexico's Ancient History'), penned by Jesuit priest Father Francisco Javier Clavijero, a highly respected New World scholar. Inhabiting the Tarascan region of Michoacán in western Mexico, the izcuintlipotzotli was the size of a maltese terrier, with a small, wolf-like head, extremely short neck, lumpy muzzle, and small pendant ears. Strangely, its forelimbs were notably shorter than the hindlimbs, its skin was mottled with black, brown, and white spots, and - most striking of all - a grotesque hump (but possibly fatty rather than bony in composition) extended the entire length of its back, from its shoulders to its haunches. Indeed, part of its name, 'potzotli', translates as 'hunchback'.
So singular was its appearance that some zoologists questioned the accepted belief that the izcuintlipotzotli was a breed of dog (albeit an emphatically homely one), even speculating that it may be some exotic species of rodent! However, the few known engravings of it that exist (such as the example opening this present ShukerNature blog post) suggest that this idiosyncratic entity was even less like a rodent than a dog.
Whatever it was, however, the izcuintlipotzotli is no more. What appears to be the last documented mention of such a creature occurred in 1843, within Frances Calderón de la Barca's book Life in Mexico, noting a dead specimen that she saw hanging from a hook near the door of an inn visited by her in the valley of Guajimalco. I am not aware of any preserved museum specimens either. If anyone reading this does have any additional information, however, concerning the seemingly demised izcuintlipotzotli, I would greatly welcome receiving it.
This post is excerpted from my book Mysteries of Planet Earth: An Encyclopaedia of the Inexplicable (Carlton: London, 1999).

