Diurnal species have round pupils and nocturnal snakes have vertical pupils. Why do some snakes have horizontal pupils?
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snake eyes question....
cnb2
Dec 12, 2004 04:48 PM
Replies (2)
oldherper
Dec 12, 2004 11:36 PM
>>Diurnal species have round pupils and nocturnal snakes have vertical pupils. Why do some snakes have horizontal pupils?
Well, it doesn't always hold true that noctournals have vertically elliptical pupils and diurnals have round pupils. Sometimes that's the case, but not necessarily. Most of the ones that have horizontal pupils are arboreal sight hunters.
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We do not inherit the Earth from our ancestors; we borrow it from our children. Ralph Waldo Emerson
cnb2
Dec 13, 2004 10:05 AM
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