Ahuizotl

Origin and tradition

Aztec accounts describe Ahuizotl as an aquatic creature that lurked in lakes and canals, dragging victims into the water with a hand at the end of its tail.

Illustration in this atlas

A dog-like water beast with slick fur, small ears, sharp teeth, and a grasping humanlike hand growing from its tail.

References and further reading

1. en.wikipedia.org — Ahuizotl (mythology)

These references offer further reading. Accounts and depictions vary; the atlas illustration is interpretive artwork, rather than historical or scientific evidence.