Desert Regnars are a small blind reptilian species which can be found in the Mekar Wilderness of Cardassia. They have an impressive facility for camouflage which is enhanced by their consistently calm demeanour, they only move when the wind or shadow can conceal their displacement and use a chameleon like ability to blend into the surroundings making them nearly invisible. Regnars like to establish colonies next to the root systems of Indigo sunsearchers.
In Elim Garak’s second wilderness hunt at the Bamarren Institute he caught a Regnar which he named Mila and used him both as an inspiration in an ability to hide and as a guide to sense hunting parties and evade them. (DS9 novel: A Stitch in Time)