Snake Identifier
Jumping Pit Viper (Atropoides mexicanus)
Atropoides mexicanus - Costa Rica by Rodtico21, via Wikimedia Commons, licensed under CC BY-SA 2.0
Vipers

Jumping Pit Viper

Atropoides mexicanus

A stout, heavy-bodied terrestrial pit viper known for its rapid, forceful strikes that can propel part of its body off the ground.

Venomous?
Venomous
Adult length
0.5-0.9 m (1.6-3 ft)
Range
Southern Mexico through Central America to Panama

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Overview

The Jumping Pit Viper is a thick-bodied snake of Central American forests notable for its fast, forceful defensive strikes, which sometimes lift its body slightly off the ground, giving rise to its common name.

Despite the dramatic name, it is not truly capable of jumping in a locomotive sense; the behavior is simply an exaggerated strike response used when threatened.

How to identify it

  • Stout, heavy body relative to length
  • Grayish, brown, or reddish coloration with darker geometric blotches
  • Broad, triangular head distinct from a narrow neck
  • Vertical pupils and heat-sensing pits
  • Rough, strongly keeled scales
  • Distinguished from other pit vipers by its unusually thick build and forceful strike behavior

Habitat & range

Found in lowland and premontane tropical forest from southern Mexico through Central America to Panama, often in leaf litter on the forest floor.

Behavior, diet & reproduction

Nocturnal and terrestrial, ambushing small mammals and other prey. Known for rapid, forceful strikes when threatened. Ovoviviparous, giving birth to live young.

Frequently asked questions

Can the Jumping Pit Viper actually jump?

Not in the sense of true jumping; its strikes are simply so forceful and fast that its body can briefly lift off the ground.

Is it venomous?

Yes, it is a venomous pit viper with a notably thick body.

Where is it found?

In forests from southern Mexico through Central America to Panama.

What does it eat?

Small mammals and other forest-floor prey.