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Mammals Animals



Blue Whale: the largest mammal in the world

Introduction

Within the classification of vertebrate animals, mammals are the most important. Females of this species have milk-secreting mammary glands, which is an indispensable food for young mammals.

Information and main characteristics of mammals

Most mammals have hair, some have their bodies partially covered, while others have hair all over their bodies.

Objectively we can say that your heart has the following characteristics: four chambers, left-curved aorta, and diaphragm that separates the chest cavities from the abdomen.

Mammal Blood

Mammalian blood always stays warm, that is, this species has a body temperature that is independent of the temperature of the external environment.

Groups that are part of mammals

The group of mammalian animals is quite large, Marsupials are part of this group (examples: skunk, kangaroo and koala), species in which the offspring develop mainly on the outside of the female's body, inside a bag called marsupium.

Also included in this group are terrestrial carnivorous animals such as cat, dog and bear, as well as aquatic animals such as seal, sea lion and walrus.

There are other aquatic mammals such as whales, dolphins, which are part of the cetacean order (marine animals belonging to the class of mammals), manatees, dugongs, which are the smallest members of the order. Sirenia (order of marine mammals).

Elephants (of the proboscid order) are placental mammals, characterized by the presence of a nose developed into a trunk; bats, which are the only mammalian animals (order Chiroptera) capable of flying, represent a quarter of the world's mammal fauna.

There are still other mammals belonging to different orders such as laziness, armadillo and anteater (order Edentata); beaver, groundhog, hedgehog and squirrel (order Rodentia).

There are two groups of hoof mammal animals, most of them members of the Perissodactyla (group of ungulate land mammals with an odd number of paw fingers, including horses, tapirs and rhinos) and the order Artiodactyla (Artiodactyls form an order of ungulate mammalian animals with an even number of paw toes, is a very diverse group, with about 220 described species, which include many animals of great economic importance to man, such as the ox and the goat. , the camel, the hippo, the pig, etc.).

Humans also belong to the group of mammalian animals (order of Primates) and monkeys also follow this same order.

Scientific classification of mammals:

Domain: Eukaryota

Kingdom: Animalia

Sub-Training: Metazoa

Philo: Chordata

Subphylum: Vertebrata

Infrafilo: Gnathostomata

Superclass: Tetrapoda

Class: Mammalia

Examples of mammalian animals: man, whale, pig, ox, dog, cat, giraffe, horse, lion, rat, kangaroo, elephant, monkey, bear, tapir, jaguar, fox, leopard, otter, manatee, deer, wild boar, maned wolf, ocelot , dromedary, camel, alpaca, llama, vicuna, cougar and ferret.

Biological curiosity:

- the blue whale (Balaenoptera musculus) is the largest mammal in the world. Its length is approximately 30 meters and its weight can reach 140 tons.