News tagged with snakes

Related topics: lizards

Buying testosterone supplements online can be risky

(HealthDay)—If you're a man suffering from low energy or libido, the drug industry is eager to help. So-called "Low T"—low testosterone—has become a common catch phrase in TV commercials, and sales ...

May 07, 2013
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Python venom traces could waste antivenom

A University of Queensland researcher has found the potential for Australian doctors to prescribe expensive antivenom to snake bite victims who don't need it.

Apr 16, 2013
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Court ruling may open door to more drug marketing

A decision by a federal appeals court this week could have a dramatic impact on the marketing of prescription drugs in America, potentially affecting patient care and everything from TV drug advertising to future government ...

Dec 06, 2012
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Computing toxic chemicals

A new computational method for working out in advance whether a chemical will be toxic will be reporting in a forthcoming issue of the International Journal of Data Mining and Bioinformatics.

Jul 18, 2013
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Ah, spring . . . and a snakebite alert

(HealthDay)—As temperatures rise and spring rains fall, snakes in the U.S. Southwest—including venomous snakes—leave their winter hideouts and become more active. That puts people and their pets at ...

Mar 03, 2014
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Snake

Snakes are elongate legless carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic amniote vertebrates covered in overlapping scales. Like lizards, from which they evolved, they have loosely articulated skulls and most can swallow prey much larger than their own head. In order to accommodate their narrow bodies, snakes' paired organs (such as kidneys) appear one in front of the other instead of side by side, and most have only one functional lung. Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca.

Living snakes are found on every continent except Antarctica. Fifteen families are currently recognized comprising 456 genera and over 2,900 species. They range in size from the tiny, 10 cm long thread snake to pythons and anacondas of up to 7.6 m (25 ft) in length. The recently discovered fossil Titanoboa was 13 m or 43 ft long. Snakes are thought to have evolved from either burrowing or aquatic lizards during the Cretaceous period (c 150 Ma). The diversity of modern snakes appeared during the Paleocene period (c 66 to 56 Ma).

Most species are non-venomous and those that have venom use it primarily to kill and subdue prey rather than for self-defense. Some possess venom potent enough to cause painful injury or death to humans.

This text uses material from Wikipedia licensed under CC BY-SA