The eel hound is a large, amphibious lizard that exhibits the ability to swim and run very quickly. It is at least eight feet tall and roughly twenty-five to thirty feet long with dark green scales (except along its ventral side) from its jaw to its tail. The eel hound is green in color with a lighter shade on its underbelly, and a darker shade of green on top of its body.
The eel hound has a very wild nature which can make it challenging to train. For this reason, very few people attempt to do so, and as such, they are not as commonly used as other animals, such as ostrich horses, for steeds.
The eel hound is a tame, calm animal once it is properly trained, and can be used for transportation over large bodies of water or running on land at great speeds; it was credited by Piandao as being the fastest known animal over land and water.
The eel hound is a cross between a greyhound and an eel. With its long, powerful legs, deep chest, flexible spine, and slim build of the greyhound combined with the elongated neck and tail of the eel, it slightly resembles a gigantic greyhound and can run at similar speeds.