2. Introduction about vertebrates
Mammals: body parts
Mammals’ functions: Respiration, Nutrition, Reproduction
and Interaction
Habitat
Groups
Curiosities
References
Summary
3. Introduction about vertebrates
They have an endoskeleton with a backbone.
They have a head, a trunk and, many of them, a tail.
They have a well-developed nervious system, articulated limbs and
bilateral symmetry.
Head Spinal column
Trunk
Articulated limbs Tail
4. Mammals: body parts
The neck joins the head and the trunk.
Their bodies are covered with hair or fur which keeps them warm.
They have teeth and mammary glands that produce milk.
9. 1. The heart of a whale has the same weight as a small car.
2. Rhinoceros’ horns are made up of fur.
3. The smallest mammal over the world is the
hog-nosed bat from Thailand.
4. Elephants can’t jump.
5. There are 701 races of dogs .
Curiosities: Did you know that…?
10. 6. Jiraffes can clean their ears with their tongue.
7. Dolphins sleep with one eye open .
8. A koala sleeps 22 hours every day.
9. Rats reproduce themselves very fast : in 18 months rats can
have more than 1 million of descendents.
10. Camels have three eyelids to protect them from sand flying
around them.
Curiosities: Did you know that…?
