Frog Information


Frog Information

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Tropical Red-eyed tree frog

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More About Frogs ...

A frog is a fresh-water amphibian of the family Ranidae, in the Order Anura. They are closely related to toads. The Ranidae are sometimes called the "true frogs" since a few members of other families also have common names including the word "frog.".

In many parts of the world the frog population has declined drastically over the last few decades. Pollutants are one cause for this decline but other culprits include climatic changes, parasitic infestation, introduction of non-indigenous predators/competitors, infectious diseases, and urban encroachment.

The life cycle of a frog involves several stages. A female frog lays her eggs in a shallow pond or creek, where they will be sheltered from the current and from predators. The eggs, known as frogspawn hatch into tadpoles. The tadpole stage develops gradually into an adolescent froglet, resembling an adult but retaining a vestigial tail. Finally the froglet develops into an adult frog. Typically, tadpoles are herbivores, feeding mostly on algae, whereas juvenile and adult frogs are rather voracious carnivores. Furthermore, The red-legged frogs normally reproduce from November to early April because during these months, the water is about six or seven degrees Celsius. Under these cool conditions, embryonic survival is ensured. Amplexus is the process wherein the male grasps the female while she lays her eggs. At the same time, he fertilizes them with a fluid containing sperm. The eggs are about 2.0 to 2.8 millimetres in diameter and are dark brown. After about six to fourteen days, the eggs hatch between July and September into brown tadpoles that are about three inches long. The tadpoles then progress to lose their tails, grow legs, and change into a juvenile form with adult characteristics.

Frogs eat insects such as mosquitoes and small animals such as minnows. Their sticky tongues are effective in catching fast-moving preys. They hunt mostly at night.

Frogs are a diverse group with some 4800 species. Most spend their lives in or near a source of water (water frogs), although tree frogs live in moist environments that are not actually aquatic. The requirement for water becomes most acute for egg and tadpole stages of the frog, yet here again some species are able to utilize temporary pools and water collected in the axils of plants.

The most familiar frogs are the Bullfrog, the Edible frog, the Leopard frogs, Spring Peepers, and the Green Frogs.

Frogs range in size from less than 50mm to 300mm in Conraua goliath, which is the largest known frog. All frogs have horizontal pupils, smooth skin and long legs with webbing between their toes. This family has a bicornuated tongue that is attached in front: They also have a tympanum on each side of their head, which is involved in sound production. Most frogs have deep, booming calls, or croaks, with some being onomatopoeically represented by the word "ribbet" or "ribbit."

Many species of frog secrete toxins from their skin when under threat. These toxins deter predatory animals from eating them, and some are extremely poisonous to humans. The natives of the Amazon area extract curare from the poison arrow frog.

Taxonmony

Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Ranidae

Source: Wikipedia Read more about Frogs

INFO LINKS

Poison Arrow Frog
The Wild Ones
There are about 170 species of poison arrow frogs! Information on distribution, habitat, breeding, mating behaviors etc. Read More

Horned Frog
Honolulu Zoo
Find out how its horns protect it from predators. "The "horn" of the horned frogs is a curious triangular prolongation of the edge of the upper eyelid". Categorized information on distribution and habitat, behavior, diet, etc. Read More

Poison-Arrow Frog
Honolulu Zoo
Poison-Arrow Frog Read More

Red-eyed Tree Frog
Honolulu Zoo
They use their eye to scare of predators. 'Because the predator is so locked onto it's target, when these bright colors flash into view (hence their name, flash colors) they throw off the predatos". Red-eyed Tree Frog Read More

Yellow-banded Dart Frog
Honolulu Zoo
Yellow-banded Dart Frog Read More

Red-eyed tree Frog
National Geographic - Creature Feature Archive
Find out why these frogs have red eyes? Red-eyed tree Frog fun facts Read More

Wrinkled Frog
Yunnan Animal Museum
About Wrinkled Frog Read More

Tomato Frog
Sedgwick County Zoo
Tomato Frog fact sheet Read More

California Red-legged Frog
U.S. Fish and Wildlife Service
"The California red-legged frog has been protected as a threatened species by the Endangered Species Act since June 1996". Endangered species report for California Red-legged Frog Read More

Gliding Tree Frog
Animals Of The Rainforest
Nice images. "Like Flying squirrels, they jump from branch to branch (or to the ground). They do not fly, they glide". Brief description, taxonomic information, pictures, and links Read More

Pygmy Marsupial Frog
Animals Of The Rainforest
"Unlike most frogs who lay their eggs in/near streams or on/under leaves, Marsupial females carry the eggs in an external pouch". Brief description, taxonomic information, pictures, and links Read More

frogs
Frog Land
Brief information on frogs. Good for kids and school work Read More

Frogs
KiddyHouse
General information on Frogs for Kids and Teachers. Response to questions like " How does the frog protect itself from the enemy ?". Read More

Wood Frog
NatureNorth
Interesting narrative Read More

Amazon Horned Frog
National Geographic
Amazon Horned Frog fact sheet and pictures Read More

American Bullfrog
National Geographic
American Bullfrog fact sheet and pictures; video clip; audio clip Read More

Golden Poison Dart Frog
National Geographic
Golden Poison Dart Frog fact sheet and pictures Read More

Green-Eyed Tree Frog
National Geographic
Green-Eyed Tree Frog fact sheet and pictures Read More

Mudpuppy
National Geographic
Mudpuppy fact sheet and pictures Read More

Northern Leopard Frog
National Geographic
Northern Leopard Frog fact sheet and pictures; audio clip Read More

Poison Dart Frogs
National Geographic
Poison Dart Frogs fact sheet and pictures; video clip; audio clip Read More

Red-Eyed Tree Frog
National Geographic
Red-Eyed Tree Frog fact sheet and pictures; video clip Read More

Spring Peeper
National Geographic
Spring Peeper fact sheet and pictures; audio clip Read More

Wallace's Flying Frog
National Geographic
Wallace's Flying Frog fact sheet and pictures Read More

Poison Arrow Frog
The Living Schoolbook - The Cyberzoo project
"The poison arrow frog has special skin, it secrets poisons which can kill other animals" Information on niche, adaptations, zoo observations, etc. Also, find out about its unique mating style. Read More

Mantella
Honolulu Zoo
Categorized information on distribution,behavior, diet, etc. "Several species are non-poisonous and are said to show Batesian or protective mimicry - imitating the colors of truly toxic species". Read More

Golden Mantella
theBigZoo.com
"The Golden mantella is about 1 inch long and is a brilliant golden-orange color. Their color seems to be protective". Categorized information. Read More

Harlequin Frog
Rainforest Conservation Fund
Brief Narrative and pictures of Harlequin Frog Read More

Leaf Frog
Rainforest Conservation Fund
Brief Narrative and pictures of Leaf Frog Read More

Poison Arrow Frog
Animals Of The Rainforest
"Their bright colors "tell" predators to stay away".Brief description, taxonomic information, pictures, and links Read More

Tree Frog
Animals Of The Rainforest
"They mainly live in trees and bushes, but are found on the ground also". Brief description, taxonomic information, pictures, and links Read More

Red-eyed Tree Frog
The Belize Zoo
Red-eyed Tree Frog: Brief Description and pictures Read More

Banjo Frog
Tasmania - Dept. of Primary Industries, Water, and Environment
Brief description of Eastern Banjo Frog Read More

Smooth Froglet
Tasmania - Dept. of Primary Industries, Water, and Environment
Brief description of Smooth Froglet. "The smooth froglet (Geocrinia laevis) is found throughout northern and central Tasmania, where it occurs in wet and dry forests". Read More

Frog-Organization
Frogwatch USA
Educational frog and toad monitoring program coordinated by the US Geological Survey Patuxent Wildlife Research Center. Read More

Frogs
Exploratorium
An articlle on "the amazing adaptable frog". Very interesting article on how are frogs have evolved to survive. Read More

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