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Home > Meet Our Animals > Reptiles > Turtles > Alligator snapping turtle
Alligator snapping turtle
Macrochelys temminckii
 
Size Most alligator snapping turtles grow to 26 inches.
Weight Most alligator snapping turtles grow to weigh about 176 although some alligator snappers in the wild have been alleged to reach up to 300 pounds.
Conservation Status On the 2007 IUCN Red List of Threatened Species, the alligator snapping turtle is listed as Vulnerable.
Diet In the wild, these turtles are both scavengers and hunters that eat a varied diet of fish, crayfish, mussels, snakes, small alligators, briar roots, wild grapes, birds and mammals, salamanders, crabs, snails, acorns and other turtles. In the zoo, alligator snapping turtles are fed fish, beef, pork, frogs, snakes, snails, worms, clams, crayfish, aquatic plants and other turtles.
Geographic Range Alligator snappers are native to the southeastern United States, specifically the Mississippi Valley between eastern Texas and Florida and rivers draining into the Gulf of Mexico. They’re found in deep rivers and lakes.
Where to find me in the Zoo The Reptile House
Note: Description below should include Longevity, Behavior, and Reproduction information
Alligator snapping turtles are also referred to as alligator snappers or loggerheads. These turtles have large heads and powerful jaws. Their shells have three distinct ridges that run from front to back.  They are found exclusively in North America.

They are the largest freshwater turtles in the North America. The biggest on record was a 236-pound turtle that lived at Chicago’s Brookfield Zoo.


Longevity

Alligator snapping turtles typically live about 70 years, but they can potentially live as long as 100 years.

Reproduction

The alligator snapper mates in early spring in eastern Florida and late spring in the Mississippi Valley. The turtles nest about two months later. Each nest usually contains between about 8 and 50 eggs (the average is 25 eggs) and is usually located about 50 yards from the edge of the water. The eggs are incubated for 100 to 140 days, and the hatchlings will emerge in the early fall.

Even though alligator snappers lay many eggs in each nest, it is impossible to predict how many of the eggs will survive. They are often preyed upon by raccoons, and the hatchlings and juvenile snappers are sometimes eaten by fish, birds or otters.

Behavior

Because they don’t move around much, the turtles’ ridged backs become covered with algae, making them almost invisible to fish.


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The Zoo's male alligator snapping turtle hatched in the wild in Louisiana. He is very large, and given this species’ longevity, may be as much as 100 years old. He came to the Philadelphia Zoo from the Cincinnati Zoo on November 16, 2006.

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Fun Facts

  • These turtles have large heads and powerful jaws.
  • The largest alligator snapping turtle on record weighed 236 lbs!
  • They are the largest freshwater turtles in the North America.
     

Conservation

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Sources: 1) Philadelphia Zoo staff; 2) IUCN 2007. 2007 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 04 January 2008.