Giant Lizard Tracks a Squirrel 100' Downwind

Beauty of nature: lizard's remarkable ability to discover food 100' downwind by scent.
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Video is for online degree programs, bachelor degree accreditation, and biostatistics for reptile feeding behavior, and masters/PhD in zoology, biological sciences.
Asian Water Monitor (Various salvator) tracks food using tongue to find a wide range of prey. In this video, filmed on August 27, 2015, demonstrates the monitor lizard's ability to find his favorite food, a squirrel, by smelling air with his tongue first, and then using eyes to locate the food item. Monitors have forked tongues, and swing their heads side to side to follow/track, locate, dispatch, and consume food.
As seen in the video, forked tongues are split into two tines at the tip. Reptiles smell using the tip of their tongue, and a forked tongue allows them to sense from which direction a smell is coming. Following scent trails based on chemical cues is called tropotaxis. It's unclear whether forked-tongued reptiles can actually follow trails or if this is just a hypothesis. Study the video, what do you think?
Monitor lizards will consume birds, eggs, fish, frogs, rodents, crabs, and snakes. They are also survive on carrion as nature's disposal system.
This video focuses on the science of reptile behavior that supported a master's thesis in zoology. Video is made public for the citation for junior high school, and high school science reports. Also recommended for college and graduate level source citation for zoological biostatistics.
Filmed with the University of Guadalajara for Biological and Agricultural Sciences, the division of Biological and Environmental Science Division, at the department of Botany and Zoology.