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Arca

Common snapping turtle

Chelydra serpentina

Conservation status IUCN: Least concern· LC
Common snapping turtle (Chelydra serpentina)
Photograph from Wikimedia Commons · Wikipedia article (en)

Where the name comes from

Chelydra was the Greek name of an unidentified amphibious reptile, perhaps a water turtle; serpentina refers to the neck, long and flexible, which the animal shoots forward like a snake. The Italian name and the English one, snapping turtle, both describe the same thing: what happens if you go near it on land.

Facts

Group
Reptiles · Reptilia
Order
Turtles and tortoises
Habitat
Ponds, slow rivers, marshes with soft bottoms and vegetation
Range
Eastern North America, from Canada to the Gulf of Mexico
Size
25–47 cm of carapace, 4.5–16 kg
Diet
Fish, frogs, waterfowl, carrion, plants
Lifespan
40 years in the wild

Characteristics

  • 01

    The plastron is reduced to a cross: it cannot withdraw into its shell.

  • 02

    In water it is shy and flees; on land, unable to hide, it attacks.

  • 03

    It spends most of its life buried in mud with only its eyes showing.

What sets it apart

Its reputation as a savage beast comes from a design flaw. The plastron is so small that head, legs and tail are always exposed: with nowhere to withdraw to, its only defence out of water is to bite first. In the water, where it can simply swim away, divers describe it as one of the calmest animals there is. It is the same individual with two opposite behaviours, depending on whether or not it can run.

Next species

Alligator snapping turtle

Macrochelys temminckii