Bruce Jayne

Dipsosaurus dorsalis

Filename: ddl250l
Class: Reptilia
Order: Squamata
Family: Iguanidae
Species: Dipsosaurus dorsalis (Desert iguana)
ANIMAL SIZE - Snout-vent length: 11.9 cm Mass: 59.5 g
SPEED - of locomotion: 250 cm/sec of treadmill: 200 cm/sec
TEMPERATURE: 35-40 degrees C
Time between successive images of video clip: 0.012 sec

Comments: Right lateral view of lizard running quadrupedally on a horizontal treadmill.
Distance between vertical lines in the background grid is 10 cm.
The tread surface is moving opposite to the direction of running. Consequently, movement of the lizard relative to the background is slower than relative to the tread surface.

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