Shovel, A.K.A. Experiment 524, is an illegal genetic experiment created by Jumba Jookiba. He is designed to to dig huge pitfall traps (does so by using his spade-like tail).
Experiment 524 was the 524th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to dig huge pitfall traps. 524 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.
All of the experiment pods were released and scattered across the island of Kauai.