FieldMarking

August 30, 2008

What smells with it’s tongue, gives live birth, and loves a sun bath?

Filed under: Uncategorized — joel @ 9:48 pm


My 4-year old kept an eye on this guy while I went into the house for my camera. It’s flicking its tongue to get a smell of the surroundings; it’s tongue is forked to enable it to smell in stereo. It is Thamnophis sirtalis, the common garter snake, one of only a handful of species of reptile that give live birth.

What!? I thought live birth (and lactation) was the very definition of being a mammal. But, according to Wikipedia, the current definition of mammals is “sweat glands, including sweat glands modified for milk production, hair, three middle ear bones used in hearing, and a neocortex region in the brain.”
What a tangled web we weave when we try to classify life on earth!

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