Aardvark sloth

Aardvark sloths are fauna commonly found in the Fire Nation archipelago, more specifically in the ruins of the Sun Warriors' ancient city. They are used by the warriors to remove viscous slime from intruders who attempt to steal their ancient relic.

Anatomy
The aardvark sloth's head, torso, and fur mostly resemble the aardvark's. These creatures have long, flexible tongues used in trapping ants and other insects. Though the creature is brown in coloration, the head and the extremities have different shades that are darker and clearer, respectively. The rear and front legs resemble the sloth's, especially in form and claw shape, therefore allowing the creature to climb and hang from trees for long periods of time. The claws can also be used as a defensive measure, albeit relatively weak, against predators.

Connection
The aardvark sloth or anteater sloth, as aforementioned, largely resembles both the giant anteater and the sloth in terms of physical build. The size of this animal seems to be between six and seven feet in length, much like the real giant anteater.

Place in the world of Avatar
Aardvark sloths are only seen as domestic animals under the care of the Sun Warriors. They are seemingly used to clean heavily adhesive substances, most specifically viscous slime, from various surfaces by using their specialized saliva.

Trivia

 * They generally resemble anteaters as opposed to aardvarks, and they are also called anteater sloths.