Used other than figuratively or idiomatically: see lizard, tail.
Houttuynia cordata, chameleon plant, a herbaceous perennial plant native to Japan, Korea, southern China and Southeast Asia.
Crassula muscosa, rattail crassula, a succulent plant native to South Africa
Saururus cernuus, a medicinal and ornamental plant native to eastern North America.
The lizard's tail plant (Saururus cernuus)
Any of various agamid lizards of eastern Asia and Australasia, including the genera Physignathus, Intellagama, and Tropicagama, all of subfamily Amphibolurinae.
A marsh marigold (Caltha palustris)
A knucker, a lizard of English folklore.