World of Vertebrate

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How many animals are there? Almost all living things are made up of either

animals or plants. There are 2 ways to tell them apart:

1. Animals move around. Most plants are held by their roots.

2. Animals find their food. Most plants make their own food.

The animal world is divided into 2 groups. Animals with backbone are called vertebrates.Animals without backbone are called invertebrates.

Vertebrates Each vertebrate has

an inside skeleton A vertebrate’s

skeleton is the backbone and all the other bones

Backbone The backbone is like a string of bones

that are close together. When you pet your cat or dog, you can feel their backbone.

The animals that have bones can be classifed into five different groups.

1. The Mammals

Mammals are alike in5 ways:1. Make milk2. They have hair3. They have limbs4. Warm blooded5. Have lungs to breath

2. Fish

Fish Lives in the water their entire life Covered with scales Smell well, but has poor hearing. Instead of hearing they feel vibrations.

Fish are alike in 3 ways:1. Gills2. Fins3. Cold bloded

3. Amphibians

Amphibians Amphibians are a class of animals that

spend the first part of their life in the water. Then some can live on the land.

They lay their eggs in the water. When the eggs grow they breath using their

gills then eventually develop lungs. The parents do not take care of the young

at all.

Amphibians They are cold blooded. They do not have scales. Amphibian means “double- life”.

They spend their life on land and water.