The world’s largest frog is the goliath frog of West Africa, which can grow up to 15 inches in length and weigh up to 7 pounds. Male frogs have vocal sacs, pouches of skin that fill with air and resonate sounds like a megaphone. This unique feature helps them produce loud sounds, with some frog calls being audible from miles away.
On the other hand, the Paedophryne amauensis frog from eastern Papua New Guinea is considered the smallest frog in the world. It’s only 7mm (0.27 inches) long. Many poisonous frogs, such as the golden poison frog and dyeing poison frog, have bold and bright colors to warn predators of their toxic skins.
The wood frog has a unique adaptation that allows it to survive in extremely cold environments like the Arctic circle. This frog can live with 65% of its body frozen thanks to glucose in its blood acting as antifreeze that protects its vital organs from damage. This adaptation helps the wood frog survive in freezing temperatures for extended periods.