1 of 3 Skin Moisture
Frogs have thin, permeable skin that lets them absorb water and oxygen. A layer of mucus helps keep frogs moist and makes them feel slimy. On the other hand, toads have dry, thick skin. The thickened skin of their upper body helps them retain water so they can live in drier habitats. Toads usually absorb water through the thinner skin of their bellies.
2 of 3 Skin Texture
If you look closely, you can see that even these amphibians' skin texture is different. Frogs have a smooth skin texture, but toads have bumps mistakenly referred to as warts. These "warts" are large, kidney-shaped poison glands behind toads' eyes called paratoid glands. These glands secrete a white, milky poison that tastes terrible and protects toads from predators.
3 of 3 Leg Length
Toads have stumpy hind legs and move in short hops. Their poisonous skin deters most predators from attacking them, so they don't need to rely on their legs to get away. Alternatively, frogs typically depend on their legs to escape predators. Their long, muscular hind legs make lengthy leaps a piece of cake.