From ErfWiki

Speculation

A non-humanoid mount unit in the shape of a large pink lizard with a puckered mouth - a sour faced salamander perhaps. Seems to be able to spit acid at enemy units.^Erf-b1-p025

Used as a mount by Jetstone.^{Erf-b1-p010Erf-b1-p097Erf-b1-p109}