Dragons are a legendary creature from the myths of various Earth cultures.
A species of dragon-like animal was the only creature that was able to withstand the harsh environments in the lower regions of Sema's home planet. (Dragon Ball Z vs. Star Trek: The Beginning of Infinity)
The USS Dragon was possibly named after the mythical creatures.
On Taladu, dragons and cockatrices were biological cousins, and ranged in adult size from 4 meters to 34 meters. Plus, alcohol magic could fell yellow and black dragons. (Star Trek: The Stoneship Files: "Alcoholic Massacre, Part I")