Amphibians By: Ms. Raab 3rd Grade Science/Social Studies
Amphibians • Amphibians lead double lives – one in water and one on land. • Many begin life with gills and then later develop lungs. • Amphibians include frogs, toads, salamanders, and newts. • They are cold blooded and use the environment to regulate their temperature.
What are the four amphibians? • Snakes, lizards, fish, and bugs • Frogs, toads, salamanders, and newts • Dogs, cats, mice, and rabbits
That is correct! Frogs, toads, salamanders, and newts
Interesting Frog Facts • Frogs can breathe not only with their lungs, but also through their skin. • A frog's skin is thin and contains many mucous glands that keep it moist. • Oxygen can be absorbed through this thin, damp skin. • Video
Red-eyed Tree Frog • Live in the Rainforest • Scientists believe that they use their vivid red eyes to scare off predators. • They are not endangered but their habitat is shrinking due to the cutting down of the rainforest.
Green-eyed Tree Frog • Found in the rainforests of Australia. • Females are larger than the males and can grow to be up to 2.8 inches.
Blue Poison Dart Frog • Depending on individual habitats, which extend from the tropical forests of Costa Rica to Brazil, their coloring can be yellow, gold, copper, red, green, blue, or black.
Dying Poison Dart Frogs • Scientists are unsure of the source of poison dart frogs' toxicity, but it is possible they assimilate plant poisons which are carried by their prey, including ants, termites and beetles. • Poison dart frogs raised in captivity and isolated from insects in their native habitat never develop venom.
Amazon Horned Frogs • They are found in freshwater marshes and pools throughout the Amazon Basin, from Colombia to Brazil. • These rotund amphibians can grow to 8 inches in length and would cover a good-size tea saucer
Northern Leopard Frogs • Once the most abundant and widespread frog species in North America, leopard frogs were widely collected not only for dissection but for the food industry (frog legs) as well. • Northern leopard frogs are named this because of the array of irregularly shaped dark spots that adorn their backs and legs. Video
Which frog is found in North America? • Northern leopard frog • Red-eyed tree frog • Poison dart grog
That is correct! Northern leopard frog
Cane Toad • Cane toads are large, stocky amphibians with dry, warty skin, and are native to the southern United States, Central America, and tropical South America. • Cane toad venom is a mix of toxins that primarily affects the functioning of the heart of whatever eats it.
Spotted Salamander • They live in forests from eastern Canada throughout the eastern and midwestern United States. • These secretive salamanders spend almost their entire lives hidden under rocks or logs or in the burrows of other forest animals.
Tiger Salamander • They are the most wide-ranging salamander species in North America, living throughout most of the United States, southern Canada, and eastern Mexico.
Mudpuppy • They can be found in southern central Canada, through the midwestern United States, east to North Carolina and south to Georgia and Mississippi. • They are also known as waterdogs • They are one of the only salamanders that make noise.
Mexican Axolotl Salamander • Found exclusively in the Xochimilco lake near Mexico City, they differ from most other salamanders in that they live permanently in water • Has a rare trait where it stays in its larval stage even as an adult. • it keeps its tadpole-like dorsal fin and gills
What is different about the Mexican axolotl salamander? • It is the biggest salamander. • It keeps its tadpole-like dorsal fin and gills. • It is the only salamander that makes a noise.
That is Correct! It keeps its tadpole-like dorsal fin and gills.
Warty Newt • They live only in Europe. • Females, which are larger than males, can reach 7 inches in length. • True to its name, the warty newt has skin that is covered in small bumps.
Objectives • The students will gain knowledge about most of the different kinds of amphibians. • The students will be able to watch videos about two different kinds of frogs. • The students will be able to answer questions about amphibians correctly.
Resources • http://www.nationalgeographic.com/ • http://www.clemetzoo.com/forfrogs/learn/funfacts.asp • http://www.fs.fed.us/r4/amphibians/frog_fact.htm • frogmatters.wordpress.com/2008/04/ • www.dnr.state.wi.us/.../amphibian/leopard.htm • users.manchester.edu/.../Tadpoles/index.htm