From Butterflies to Frogs: 10 Most Poisonous Animals

By Sheetal Kumari | May 04, 2025

From Butterflies to Frogs: 10 Most Poisonous Animals

Small but deadly, these colourful frogs carry skin toxins that can paralyse or kill. Just one can contain enough poison to kill 10 people.

Poison Dart Frog

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This invasive species secretes milky toxins from its glands that can sicken or kill predators. It’s especially dangerous to curious pets and wildlife.

Cane Toad

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Don’t be fooled by its beauty. Its muscle tissue contains lethal toxins, making it one of the few poisonous cuttlefish known to science.

Flamboyant Cuttlefish

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Though not venomous, its flesh contains high levels of toxins. Eating it without proper preparation can cause severe illness or even death.

Greenland Shark

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This bird stores batrachotoxins in its skin and feathers, making it one of the few known poisonous birds in the world.

Hooded Pitohui

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These snakes absorb toxins from the poisonous toads they eat, storing it in their neck glands as a defensive weapon against predators.

Keelback Snakes

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Monarchs are toxic to predators due to milkweed toxins stored in their bodies. Their bright colours warn birds: “Don’t eat me!”

Monarch Butterflies

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Containing tetrodotoxin, one of the deadliest poisons, puffer fish can kill within hours. There’s no known antidote for its toxin.

Puffer Fish

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They secrete cantharidin, a chemical that causes severe skin blisters. Ingesting just a few can be fatal to animals and humans.

Blister Beetles

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Feeding on toxic sponges, Hawksbills accumulate poison in their flesh. In some regions, eating one has led to fatal food poisoning.

Hawksbill Sea Turtle

(Image: Canva))

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