Arizona has an abundance of reptiles from Gila monsters to rattlesnakes ... easily identified by its long, orange tail, is unique to South Mountain in Phoenix. "I love them.

A Gila monster that bit its owner in Lakewood on Feb. 12, leading to the man's death, was returned to Colorado this week and sent to a lab in Greeley on Thursday for testing on the reptile's venom.

The Gila monster's bite may be agonising, but humans have been using the lizard's venom to save lives. Over 30 years ago scientists discovered the potential of Gila monster venom as a treatment for ...