Sing to a lizard

...because apparently lizards like to be sung to. From David Rains Wallace's Chuckwalla Land: The Riddle of California's Desert:

Lester Rountree, a prominent California botanist, was singing to herself while collecting plants one day when a lizard emerged from under a boulder, climbed on her knee, and "showed an enormous capacity for large doses of song, closing his eyes in absurd abandon and opening them whenever I shut up, his eyelids sliding back to reveal pleading orbs. This went on for some time till I finally...placed him, limp with emotion, on the boulder."

Couldn't hurt to try it.