frogs :: essays research papers

Frogs argon usually small animals that have smooth, moist skin, bulge eyes, and external eardrums behind the eyes the adults lack a tail. Frogs have colossal hind legs, and most species skunk take long leaps. many species alike have webbed feet, making them excellent swimmers.Most captures, especially males, are quite vocal. As the frog forces air through the voice box, or larynx, the vocal cords vibrate to make calls distinctive of its species. A such(prenominal) louder sound is produced by the males of species that possess vocal sacs, which swell enormously when the frog calls to attract a mate. The frogs tongue is attached at the front of the express instead of at the rear, and it is covered with a sticky substance, making it an competent trap.Like most amphibians, most frogs pass through a independent fishlike larval stage before undergoing true metamorphosis into adult frogs. Many of these frogs lay their eggs in water, although some lay their eggs on vegetation above the water, in wet places on land, or even off on the back of one of the parents. The breeding season varies according to species and geographic region but often coincides with heavy spring or pass rains. Tadpoles have gills and a tail, and most provender on algae and some other vegetation, although a few are carnivorous and may even feed on their siblings. As tadpoles mature, the tail is absorbed, lungs develop, the gills disappear, legs appear, and the adult frog form is established. around frogs, especially in the tropics, do not go through a larval phase these frogs lay eggs, usually in damp places egress of water, that hatch directly into froglets.Behavior Frogs live in a pattern of habitats, but most prefer moist regions. Although they are air breathers, frogs can stay underwater for long periods, and they can breathe through the skin. head frogs are adapted for tree living other frogs are permanently aquatic still others spend most of their lives in underground burrows , sexual climax up only to feed or breed.