Prepare a picture of/book about/a toy frog in advance, as well as a sample of Say: Look at this animal. (Show a picture of a frog.) This is an amphibian. Remember, to be classified as an amphibian, an animal should have a backbone, permeable skin (molecules and gases can pass through). They are vertebrates. Amphibians are cold-blooded and spend at least part of their lives in water and on land. They have gills for at least part of their lives. Most amphibians go through metamorphosis. The frog is an amphibian under the order Anura (Greek meaning “Tail-Less”). Adult frogs are characterized by two bulging eyes; strong, long, webbed hind feet that are adapted for leaping and swimming; (Come on, baby, let´s leap like a frog)and smooth or slimy skin and no tail! Frogs use their sticky, muscular tongue to catch and swallow food. Unlike humans, their tongue is not attached to the back of its mouth. Instead it is attached to the front, enabling the frog to stick its tongue out much further. Frogs swallow their prey in one piece because they only have teeth in the upper jaw! Frogs can see forwards, sideways and upwards all at the same time. They never close their eyes, even when they sleep. Remarkably, frogs actually use their eyes to help them swallow food. When the frog blinks, its eyeballs are pushed downwards creating a bulge in the roof of its mouth. This bulge squeezes the food inside the frog's mouth down the back of its throat. Frogs hunt mostly at night. The male frogs are the ones that sing. Males are the ones that have the loud voice. Some females have voices too but they are softer. The males sing (grunts, croaks) to attract the females for mating. (Would you like to croak like frogs, sweetie?). Some frogs even have a vocal sac which fills with air and swells up to make the voice even louder, like an amplifier. Frogs are living things and need energy to survive. A frog mainly lives on insects and small animals like earthworms, minnows and spiders. Since they feed only on other animals, they are considered carnivorous. Frogs can be found almost anywhere except the Antarctica. However, most species are found in tropical regions. More frogs are found in warmer countries Once the male frog attracts a female to mate. It sits on the female's back and holds onto it. As the eggs are released into the water, the male will release sperm over them to fertilize them and then they will leave. The eggs will hatch within 3-25 days depending on the species and water temperature. The eggs are usually covered with a jellylike substance, which acts as a protective coating. The eggs hatch into tadpoles that swim in fresh water and breathe with gills. They have a tail and have external gills, which they breathe through. Tadpoles eat plants and decaying animal matter. As a tadpole grows, it develops legs and loses its tail; It becomes a frog breathes with lungs and lives on land. This process is called metamorphosis. We need to take care of frogs and treat them with respect because they are living things just like us, people.
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