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Mammals 1

Mammals are vertebrate animals characterized by mammary glands, hair or fur, and warm-bloodedness, found in diverse habitats worldwide. They include land, marine, and flying species, with notable examples being dogs, whales, and bats. Key features of mammals include a complex brain, a four-chambered heart, and most giving birth to live young.

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35 views4 pages

Mammals 1

Mammals are vertebrate animals characterized by mammary glands, hair or fur, and warm-bloodedness, found in diverse habitats worldwide. They include land, marine, and flying species, with notable examples being dogs, whales, and bats. Key features of mammals include a complex brain, a four-chambered heart, and most giving birth to live young.

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rosiebelvizzcayno
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We take content rights seriously. If you suspect this is your content, claim it here.
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Mammals are vetebrate animals in the class of mammalia.

Their mammary glands is the noticable characteristics


of mammals. Most mammals are intelligent, with some possessing large brains, self-awareness, and tool use.

Non-human mammals play a wide variety of roles in human culture. They are the most popular of pets,
with tens of millions of dogs, cats and other animals including rabbits and mice kept by families around the
world.

Mammals are a highly diverse group found in almost every habitat on Earth, from oceans and deserts to
polar regions and rainforests. They vary greatly in size, from the tiny bumblebee bat to the enormous blue
whale.

Examples of Mammals:

 Land mammals: Cats, dogs, horses, cows, bears, elephants, rodents, primates (monkeys, apes,
humans), and many more.
 Marine mammals: Whales, dolphins, seals, sea otters, and walruses.

 Flying mammal: Bats.

Characteristics of Mammals:

 Hair or Fur: All mammals have hair or fur at some stage of their life, even if it’s sparse in some
species like whales. Hair provides insulation, sensory functions (like whiskers), and sometimes
camouflage or defense.

 Mammary Glands: Female mammals possess mammary glands that produce milk to nourish their
young. This is a defining characteristic unique to mammals.

 Warm-Blooded (Endothermic): Mammals can regulate their internal body temperature, allowing
them to live in a wide range of climates.

 Three Middle Ear Bones: Mammals have a unique middle ear structure with three small bones
(malleus, incus, and stapes) that enhance hearing.
 Single Bone in the Lower Jaw: The lower jaw of mammals is composed of a single bone on each
side.

 Complex Brain: Mammals have a more developed and complex brain compared to other animal
groups, particularly the neocortex region, which is involved in higher-level functions.

 Four-Chambered Heart: Mammals have a four-chambered heart that efficiently separates


oxygenated and deoxygenated blood.

 Most Give Birth to Live Young (Viviparous): With the exception of monotremes (platypus and
echidnas) which lay eggs, most mammals give birth to live offspring.

 Diaphragm: Mammals have a diaphragm, a muscle located below the lungs that aids in
respiration.

 Specialized Teeth: Most mammals have different types of teeth (incisors, canines, premolars, and
molars) adapted for various feeding habits.

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