Frogs vs. Toads: Frogs and toads are amphibians, meaning they start off as water-breathing juveniles and develop into air-breating adults. No clear distinction exists between frogs and toads, although the skin of a toad tends to be rougher and drier than frogs. Toads also tend to be covered with warts.

Deadly Tongue: Both critters are characterized by their short, ridged body and wide head. Large protruding eyes and a noticeable eardrum on each side of the head are always on the alert for the next meal. A large mouth houses a long, sticky tongue that quickly flicks out to capture live prey. Without teeth and unable to chew, a frog's meals are swallowed whole.

Vulnerability and Defense: Frogs and toads are very vulnerable as they have no defenses against predators. Their best bet to escape being eaten is their ability to jump quickly or their talent for blending into their surroundings. Some species have evolved glands that secrete a poisonous and distasteful substance on their skin. These animals are usually brightly colored to give warning to a predator ready for a meal that it best look elsewhere.