Frogs, toads, newts and salamanders are amphibians.
Amphibians are cold-blooded.
Amphibians spend part of their lives under water and part of their lives on land.
They lay jelly-covered eggs in the water.
Amphibians breathe with gills or lungs or through their skin.
Next to mammals, birds are the most useful to man. There are thousands of different kinds of birds. They vary in size from the tiny hummingbird to the large ostrich.
GROUPING BIRDS Birds can be grouped by where they live - land birds, water birds, Arctic birds, tropical birds. Birds can be grouped by what they eat - birds that eat insects, birds that eat fruits and seeds, birds that eat meat and fish. Birds can also be grouped according to the shape of their feet, beaks or wings.
ANIMAL GROUPS - FISH
Fish are cold blooded.
Fish lay eggs.
Most fish are covered with scales.
They have fins not legs.
Fish live in water and breathe through gills.
HOW A FISH BREATHES The fish takes water into its mouth. The water goes back through the gills. Then the gill cover at the side of the fish's head opens and the water runs out. This intake of water gives the fish oxygen. If a fish is out of water for a while, it will die because the gills will not work unless the fish is in the water.
WHAT ARE INSECTS ?
Insects have six legs (when fully grown).
The body of an insect is made up of three parts. ( head - thorax - abdomen )
They have their "skeletons" on the outside (like a shell).
Insects have one or two pairs of wings.
Insects are cold-blooded.
They have no lungs, but small openings on their bodies.
Insects lay many eggs.
Most insects go through a life cycle called metamorphosis .
MAMMALS Mammals are the most intelligent creatures on earth. They learn to adapt to many different climates and living conditions. Some mammals are tame, some are wild, some are very large and some are small.
Snakes, lizards, turtles, tortoises, alligators and crocodiles are REPTILES. Reptiles are alike in the following ways: