The diversity of mammals is amazing. Theycan be as huge as these whales, or as tiny as this cute little balancing mouse. They can be noisy like this howler monkey, or quiet like this hedgehog with its sharp, pointy
spines. Even though they’re amazingly diverse, all
mammals have a number of common characteristics you should know about, so you can recognize
and differentiate them. All mammals are viviparous, they are born
from their mothers’ womb. In their early stages of life, they feed on milk, which they
get from their mothers' breasts where the mammary glands are. And that’s why they’re
called mammals. And when they’re little, they’re so cute, aren’t they? Mammals reproduce by internal fertilization when a sperm cell and an egg join inside the
female. As you can see, they have teeth inside their mouths, and lips around them so they can eat and suck milk. Most mammals’ bodies are covered with hair, and all mammals breathe with their lungs,
even if they live in the sea. Look at these dolphins coming to the surface for air. The body temperature of mammals doesn’t depend on whether it’s cold or hot outside, because they can maintain their own internal temperature. Almost all mammals are terrestrial, like camels, and jaguars. Some live in the sea and are called Marine mammals,like these dolphins,and these seals, There's even a flying mammal,
bats are the only mammal that flies. Mammals have four limbs, which vary depending on where they live. Land mammals have legs,so they can walk,and run when they need to,and
Jump.,and sometimes even climb. Marine mammals have fins so they can swim
very fast… And flying mammals have wings so they can
fly through the sky… Do you know which is the most wonderful mammal
that lives on Earth? Human beings! People are mammals too… How mammals feed
Depending on what they eat, mammals can be classified into different groups.
Herbivores only eat plants and their teeth are especially designed for grinding. Horses,
sheep and llamas are herbivorous mammals. Some very special herbivores are called ruminants.
They swallow their food almost without chewing it, and some of it is digested normally, but
some of it is stored in their stomach, and when they want to, they regurgitate it into
their mouth to digest it again. Cows, giraffes and goats are ruminants.
Carne means skin or meat in Latin, and that’s what carnivores eat: the flesh of other animals.
Their teeth are large and sharp for hunting and tearing at their food.
Carnivores that eat insects and other invertebrates are called insectivores,like these anteaters. Omnivorous mammals feed on both meat and plants. Bears, monkeys and humans are omnivores: we
can eat a tasty burger with lettuce and tomato. So, let's remember, Mammals are viviparous, and in their early stages of life they feed on milk from their mother’s breasts, They have lips and breathe with their lungs, Their body temperature does
not depend on the environment they are in, and depending on their food sources, they
may be herbivores, carnivores or omnivores. Easy, right?
So goodbye for now, everybody! And don’t forget to subscribe to Happy Learning!