Difference Between Frogs and Toads
Frogs have smooth, moist skin, long legs for jumping, and live near water. Toads have dry, bumpy skin, shorter legs for walking, and can live farther from water. Scientifically, all toads are frogs (order Anura), but we commonly distinguish them by these physical characteristics.
Key Takeaways
- Skin is the most obvious difference.
- Toads do not cause warts - the bumps on their skin are glands, some producing mild toxins for defense.
- Tree frogs are exceptions that live away from ground-level water but still need moisture.
Explanation
Skin is the most obvious difference. Frogs have smooth, moist, often shiny skin that helps them breathe and must stay wet. Toads have dry, rough, bumpy skin (often called warty) that helps them retain moisture and survive in drier habitats.
Body shape and movement differ too. Frogs have slim bodies and long, powerful hind legs built for jumping and swimming. Toads have stocky bodies with shorter legs and tend to walk or make short hops rather than long leaps.
Habitat preferences follow from their physical adaptations. Frogs live in or very near water (ponds, streams, wetlands). Toads can venture much farther from water and are often found in gardens, forests, and even deserts, returning to water mainly to breed. Understanding why leaves change color also relates to seasonal changes in amphibian habitats.
Egg-laying patterns are a reliable way to identify which group you are looking at. Frogs typically lay eggs in round, jelly-like clusters that float on or near the water's surface—a single bullfrog can produce up to 20,000 eggs at once. Toads lay their eggs in long, double-stranded chains that wrap around aquatic vegetation, with the American toad producing chains up to 20 feet long containing 4,000-8,000 eggs.
Defense mechanisms also set the two apart. Many toad species have prominent parotoid glands behind their eyes that secrete bufotoxin, a milky substance that tastes bitter and can sicken predators. The Colorado River toad produces a toxin potent enough to kill a dog that mouths it. Most frogs lack these defensive glands but compensate with speed and camouflage—some tropical species like poison dart frogs store alkaloid toxins absorbed from their insect diet in their skin, making them truly poisonous (not venomous) and among the most toxic animals on Earth.
Things to Know
- Toads do not cause warts - the bumps on their skin are glands, some producing mild toxins for defense.
- Tree frogs are exceptions that live away from ground-level water but still need moisture.
- Some species blur the line and may be called either frog or toad depending on region. A similar naming confusion exists between bees and wasps.
- The midwife toad is unusual in that the male carries fertilized eggs wrapped around his hind legs until they are ready to hatch, defying the typical toad reproduction pattern.