Amphibian · GBIF taxon 2432031
Hellbender
Cryptobranchus alleganiensisAlso known as Snot Otter, Devil Dog, Mud Dog, Grampus
Hellbenders are fully aquatic, giant salamanders with flattened bodies and wrinkled skin folds that allow them to absorb oxygen directly from cold, fast-flowing streams. During the day, these secretive amphibians hide under large, flat river boulders, emerging at night to hunt crayfish and small fish along gravel stream beds. Breeding males construct clean nest cavities beneath massive submerged rocks, fiercely defending their eggs until they hatch.
AquaticNocturnalAmphibian
—observations
—countries
—peak records
VulnerableConservation statusIUCN Red List categoriesLCNTVUENCREWEXVulnerableRed List categories, explained →
Diet & prey
- Crayfish
- Small fish
- Aquatic insect larvae
Predators
- Northern water snake
- Large fish (bass, trout)
- Great blue heron
ThreatsSiltation, water pollution, dam construction, habitat loss, and Chytrid fungus
HabitatsCold, clean, fast-flowing clear streams and rivers with rocky substrate
Life spanUp to 30 years in the wild
Size / weightNot available
Classification
- FamilyCryptobranchidae
- SpeciesCryptobranchus alleganiensis
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Capable of delivering a painful bite if cornered or handled; observe from a distance without lifting rocks.
- What to notice
- Look for a flat, broad head, slimy wrinkled skin folds, and tiny eyes in clear rocky streams.
- Support conservation
- Never disturb stream rocks, handle wild individuals, or disclose specific location coordinates online.
Responsible observation
- Avoid rock turning: Lifting river boulders destroys critical nesting habitat and crushes hiding individuals.
- Keep water clean: Avoid disturbing stream beds or washing gear with soap in sensitive watersheds.
- Angler care: Cut the line close to the mouth if caught accidentally on a hook rather than pulling it free.
Co-occurring Amphibian (c) Brian Gratwicke, some rights reserved (CC BY) · cc-by
Regional Salamander (c) Matt Felperin, some rights reserved (CC BY), uploaded by Matt Felperin · cc-by
Close Relative Salamandra2021 / CC BY-SA 4.0 · cc-by-sa
Close Relative Petr Hamerník / CC BY-SA 4.0 · cc-by-sa
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