Black Capped Teimarr are a small and sociable breed of dragon with an appetite for seafood. They can commonly be seen flitting around sand dunes and tidal marshes, searching for crabs and other aquatic invertebrates, or cavorting in tidal pools in hopes of finding landlocked fish. Because of their large wing-to-body size, they are excellent long distance fliers and are known to migrate hundreds of miles along coastlines, or even across open sea to outlying islands in search of seasonal delicacies such as bird eggs, fledglings and schooling bait fish. The males are easily distinguished by their large jousting horns and their extendable neck frill, which they show off to the females through enthusiastic head bobbing.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Croco knows he isn't very smart, but he likes to act like he is by casually using words he doesn't know, sticking his nose into smart-dragon-problems in an attempt to help solve them, and say things in the same wise tone that the leaders and scientific types tend to use. His behavior usually gets on others' nerves, and other inhabitants often say that he should stop biting off more than he can chew, but he does occasionally surprise them by succeeding at something important. He is, they admit, great at staying calm and strategizing during a crisis, and a handful of dragons are envious that he can also make any color and material of horn and neck accessories look good on him.