Labial-Licking for Chemical Sampling by the Leopard Gecko (Eublepharis macularius)

@article{DePerno1996LabialLickingFC,
  title={Labial-Licking for Chemical Sampling by the Leopard Gecko (Eublepharis macularius)},
  author={Christopher S DePerno and William E. Jr. Cooper},
  journal={Journal of Herpetology},
  year={1996},
  volume={30},
  pages={540}
}
Lizards perform several distinct types of lingual protrusions, including tongue-flicks directed to environmental substrates, tongue-flicks passing through the air, but not contacting a substrate (e.g., Burghardt et al., 1986), and short extensions directed to the individual's own labial scales. Tongue-flicking, i.e., outward protrusion of the tongue directed at a substrate or into the air, is a primary method of sampling environmental chemicals for transfer to the vomeron- 
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