Frogs Essay

891 words - 4 pages

essay on frogs, all around -FrogsFrog is the common name for a species ofamphibian that also includes toads. A very commonquestion is "whats the difference between frogs andtoads?", the answer: none, except for the fact that toadslack the powerful legs that frogs have. "Where can frogsand toads be found?", one might ask. They live in allparts of the world, except for Antarctica, but are mostlyfound in tropical areas. Frogs are small animals withsmooth moist skin, and big eyes that can see in almostany direction. Most species have webbed feet andpowerful legs making them good jumpers, and excellentswimmers. A frogs tongue is attached to the front of it'smouth instead of the rear, and most frogs are very vocal,especially the male frogs.As a frog grow, it goes through many changes.Starting out as a tadpole, and morphing into a frog.Most frogs lay their eggs in water. Others will lay theireggs some where safe, then carry them to water wherethey hatch into tadpoles. At this stage they have gills,no legs, and a tail. As they mature, their gills and taildisappear, and they develop lungs and legs. This periodof tadpole life can be divided into three stages. The firststage, called "premetamorphosis," lasts about 50 days(Patent 54). The second stage, in which the hind legsgrow, is called "prometamorphosis," and lasts about 21days. When the legs are about as long as the body, thethird stage, which is called "metamorphic climax," andtakes place very rapidly, begins. During this last stage,which lasts about a week, many great changes occur.They lungs complete their development, and the gillsdisappear. The skin gets thicker, nostrils form, and thetail is completely resorbed.Most frogs prefer moist regions, and many kindslive in the water. Because frogs absorb oxygen in waterthrough their skin, they can stay underwater for longperiods of time. A frogs body temperature depends onit's surroundings, and during cold weather, frogs digburrows in mud and hibernate. During hibernation, thefrog needs little oxygen and no more food than is alreadyin it's tissues. During intense heat, a frog mightestivate, or in other words, lie in a state of torpor duringthe heat, after burying themselves in sand and clay.Frogs are carnivores. They eat just about anythingsmaller than then that moves. A frog thinks like this: Ifit's smaller than itself and moves, eat it. If it's the samesize, mate, or attempt to mate (this gets some frogs inlots of trouble). If it's bigger than itself, run. Their dietmay include insects, worms, spiders, or even centipedes.Aquatic frogs sometimes eat other frogs, tadpoles, andsmall fish. Large frogs can eat can eat stuff as big asmice and snakes. Sometimes a frog eats something toobig to swallow all at once, and will leave it sticking outof its mouth...

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