How do frogs and amphibians reproduce?
468432
they have sex and then lay eggs which are called spawn. the larvae or tadpoles emerge and metamorphose into frogs (they grow legs).\n\nthe tadpoles are totally aquatic and have gills, which are lost as metamorphosis progresses. in salamanders the larval stage is called a axylotle and can remain in the larval stage for many yaers until a hormonal change in the water stars the change in development, this is a tactic enebling the salamnder to wait until the optimum time to reproduce, and cut out the chance of progressing to adulthood with no mates around to fertilize.
683177
If it is a living thing it has to be able to reproduce, otherwise it would go extinct.  Protists can reproduce.
562774
Most amphibians, such as frogs and toads, are not very fast so they cannot simply chase down their food like lions. They have camouflage and use it to hide and remain still until the fly, or other animal they wish to eat, is within range and then they can get their meal.
100844
Basically, because the investment made in the eggs is different, according to their reproductive strategy.\n\nThe eggs of amphibians are oligolecithal, that is, they have only a small quantity of vitellum (nutritive substance). Amphibian development includes a larval stage (the tadpole) that is able to feed for itself before becoming an adult; therefore vitellum is only needed during the short period of embryo development inside the egg and during the first stages of the tadpole life, when its mouth is not yet developed. \nThe female produces hundreds of eggs, very few of which will eventually become adults. Most amphibians do not exhibit parental care either, thus the reproductive strategy is focused on producing larger amounts of eggs, rather than protecting each one. \nIn contrast, reptiles (and birds, i.e. all sauropsid amniotes) have macrolecithal eggs, with a large proportion of nutritive vitellum (vitellum is the yellow part of hen's eggs). This large amount of vitellum is necessary because all amniotes undergo direct development, and it represents the entire food source for the reptile embryo (except for the viviparous forms). Although most reptiles (with the exception of crocodiles) do not have parental care either, the formation of these eggs, which provide food and protection from environmental factors, is a greater investment. If more energy is spent in producing each egg, there will be less of them, but with higher survival probabilities.
541895
Their skin. It is permeable to oxygen and carbon dioxide, as well as to water. On land, adult frogs use their lungs to breathe. When a frog is underwater, oxygen is transmitted through the skin directly into the bloodstream. Because the oxygen is dissolved in an aqueous film on the skin and passes from there to the blood, the skin must remain moist at all times.
146631
Many survive the same way reptiles and amphibians do. They hibernate by digging into the mud and burying themselves within. Others are capable of surviving in low-temperature water. The rest migrate like birds.
349915
The modern amphibians (a natural group called Lissamphibia) comprise urodeles (salamanders), anures (frogs and toads) and caecilians or apodes. These are intriguing amphibians because they're highly adapted to life underground or in water, and few people know them or have ever seen them in the wild, although they're fairly common in all the world. \nThe name "caecilia" means "blind", and indeed their eyes are covered by the skin and sometimes by bone too, although they can perceive light and dark. \nI like them, if only because I share my first name with them. \nHere's a picture of one showing their exclusive sensory tentacle:\nhttp://www4.nau.edu/bilby/photo_illustration_page/images_photo_page/Caecilian.jpg
959644
some frogs, fish and shellfish are capable of this.\n\ni dont believe that any mammals can.\n\nIt seems to me that the ones that can do this are usually they type that release their eggs and spem with no consideration of who fertilizes them
721394
Mosquito or frog eggs
179270
They mate for life.\nThey shed like a snake.\nThey can, in fact, be blue.\nThe females carry the eggs on their sides.\nThey swim backwards.\nThey're cute. ;3;
325777
Frogs may return to where they were born to mate, it depends on many factors. Of course, if they always returned to the same place generation after generation the inbreeding would be horrific, so most frog species disperse- it might only be one sex, but when they become frogs brothers and sisters are competing with each other for food so it is their best interest to find "new ground"- if they find a good pond, they will stay there and breed. You are very lucky to have a frog orgy in your back yard- it indicates a healthy environment.
605539
http://en.wikipedia.org/wiki/Frogs
655003
When the egg and the sperm fuse (in sexual reproduction) a single cell is formed.  That cell divides and divides and keeps on dividing until a full sized critter or plant is formed.\n\nSingle celled creatures reproduce by splitting in half to make two new critters.
835280
Toads and salamanders
185508
Sure, ask a question with no answer.;-) \nThere is currently no information available about the breeding behavior of this species according to University of Texas Austin.  Because it is a cave salamander it is likely that there is no actual breeding season for this species. In a cave environment most or all seasonal cues such as changes in day length, or temperature are absent. \n\nBelow is a description of what is known about the breeding behavior of the Texas Blind Salamander, which are closely related taxonomically, geographically, and in habitat to the Cascade Caverns Salamander. It seems to be the only info available for any of the cave salamanders in TX. It's probably fair to speculate that their breeding strategies are similar or even the same.\n\n\nLittle is known about the reproduction of Eurycea (Typhlomolge) rathbuni. The species is known to be acyclic with females maturing and reproducing throughout the year, unresponsive to seasonal cues. This breeding cycle is typical of many cave dwelling species (Lofts 1974). Breeding of this species has been observed in the laboratory. The females assumes an active role in stimulating the male to mate. Her behavior is characterized by rubbing her chin along the male's back. If this fails to stimulate the male then she may scratch at him or fan her tail at him. She may even resort to nipping at his sides if he further ignores her advances. The male will deposit a spermatophore on a rock or substrate and the female will then pick it up with her cloaca (Bechler 1988).
193970
>Reproduction occurs both sexually and by asexual budding. Sexual reproduction is by means of eggs and sperm, which are produced in the mesentaries and shed into the water. Fertilization results in a free-swimming larva, which attaches to a surface and secretes a skeleton, becoming (in colonial forms) the parent of a new colony.
358278
Some are hermaphroditic and self-fertilize their eggs, which they keep in their gills even after hatching until the young bear shells. Others are heterosexual and spew out eggs and sperm which unite and produce independent larvae that swim for a few weeks and then settle on a substrate. See ref.