Frogs :: essays research papers

FrogsFrog is the common name for a species of amphibian that also includestoads. A very common question is whats the difference between frogs and toads?, the answer none, except for the fact that toads lack the powerful legs thatfrogs have. Where heap frogs and toads be found?, one king ask. They live inall parts of the world, except for Antarctica, but are mostly found in tropicalareas. Frogs are small animals with smooth dampish skin, and big eyes that cansee in almost any direction. Most species have webbed feet and powerful legsmaking them good jumpers, and excellent swimmers. A frogs tongue is attached tothe front of its mouth instead of the rear, and most frogs are very vocal,especially the male frogs.As a frog grow, it goes through with(predicate) many changes. Starting out as a tadpole,and morphing into a frog. Most frogs lay their eggs in water. Others will laytheir eggs some where safe, therefore carry them to water where they hatch intotadpoles. At this stage they hav e gills, no legs, and a tail. As they mature,their gills and tail disappear, and they develop lungs and legs. This period oftadpole life can be divided into three stages. The first stage, called premetamorphosis, lasts about 50 days (Patent 54). The second stage, in whichthe hind legs grow, is called prometamorphosis, and lasts about 21 days. Whenthe legs are about as coherent as the body, the third stage, which is called metamorphic climax, and takes place very rapidly, begins. During this laststage, which lasts about a week, many great changes occur. They lungs completetheir development, and the gills disappear. The skin gets thicker, nostrilsform, and the tail is solely resorbed.Most frogs prefer moist regions, and many kinds live in the water.Because frogs absorb oxygen in water through their skin, they can stayunderwater for long periods of time. A frogs body temperature depends on itssurroundings, and during cold weather, frogs dig burrows in mud and hibernate.During hiberna tion, the frog needs little oxygen and no more forage than isalready in its tissues. During intense heat, a frog might estivate, or inother words, lie in a state of insensibility during the heat, after burying themselvesin sand and clay.Frogs are carnivores. They eat just about anything smaller than thenthat moves. A frog thinks like this If its smaller than itself and moves,eat it. If its the same size, mate, or attempt to mate (this gets some frogs