The Yeeogog is a carnivorous invertebrate with a wedge shaped head and short antennae, two black feline eyes, and an indented jaw with two very long canines. It has a skeletal thorax with an ossified waist, and an elongated thin abdomen. It has ten medium-length, spindly legs. They can reach heights of 30 cm to over three meters. They can reach lengths of up to seven feet.

They are exclusively hunted by Typhon Hounds, as they are immune to the botulinum toxin saturated in the flesh of the Yeeogog.