One old myth says that frogs fall from the sky during a rain. Actually, many species that live underground leave their burrows during or after a rain at the start of the mating season. Because people seldom see these frogs the rest of the year, they imagine the animals fell from the sky with the rain. The body of a frog The giant, or Goliath, frog of west-central Africa ranks as the largest frog. Frogs also differ in color.
Most kinds are green or brown, but some have colorful markings.
Although different species may vary in size or color, almost all frogs have the same basic body structure. They have large hind legs, short front legs, and a flat head and body with no neck. Adult frogs have no tail, though one North American species has a short, taillike structure. Most frogs have a sticky tongue attached to the front part of the mouth. They can rapidly flip out the tongue to capture prey.