These are the famous Sand Crocs who were able evolve legs strong enough to lift their bodies off the hot sand and used their long tails to store water when crossing the desert from one water source to another, according Dr. Lee T. Itghoe of the University of Rangoon reported in The Atkinsonville Cosmic Tribune of Nov. 1, 1999.*
His study was somewhat controversial when he found irrefutable evidence that the Sand Croc was a near relative of camels.
*Motor Repair Manuals, pg. 11199-400050, “Wine Making Mad Easy”.