Genetic Nightmares is a manga/ comic series I'm doing. Gulpers are Nocturnal Hunters that swallow (Or Gulp as their name implies) their prey whole. They are 20 feet long, and can run very fast in short bursts.
Gulpers are also solitary animals, and only meet up with other members of their species when it is time to mate.
Other than that Gulpers are very territorial as well.
Hope you like it :)