Reptiles

Reptiles

Any of various cold-blooded, usually egg-laying vertebrates of the class Reptilia,that have an external covering of scales or horny plates and breathe by means of lungs.

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alice1

Beijing, China

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Reptiles

intergrade

Animals; Reptiles

Animals that seem to blend characteristics of subspecies.

jacobsons organ

Animals; Reptiles

Snakes use this organ to sense prey, sticking their tongue out to gather scents and touching it to the opening of the organ when the tongue is retracted.

keel

Animals; Reptiles

A ridge down the center of a scale. Very sharp keeling may make an animal appear quite rough. In general, an animal with keeled scales will appear less shiny and lustrous than one with unkeeled ...

In reptiles, this is when the eggs hatch while still inside the female, and the young soon emerge alive. The young do not obtain nutrients from their mother while in the reproductive tract, as is the ...