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Mammals are warm-blooded vertebrate dominant on land, sea and in the air. They have furs on their skin. They have four chambered hearts and diaphragm for efficient gaseous exchange.

Vertebrate are Animals having bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium.

Diaphragm is a muscular partition separating the abdominal and thoracic cavities for respiration functions.

Land Mammals: Human, Cows, Dogs, Sheep.

Sea Mammals: Whales, seals, and dolphins.

Air Mammals: Bats.

Mammals Characteristics:

All mammals possess dermal milk glands. Only mammals possess this structure from which the name mammal is derived. They are generally viviparous and show parental care. The body of all mammals comprise the head, neck trunk, and tail.

The head has a pointed snout, nostrils, a narrow mouth with short lower jaw, two small eyes that can look diagonally, forwards, or side ways, except in the primates. There is also the ear lobe (pinna) and numerous whiskers (vibrissae) around the mouth. On the jaws of mammals are different types of teeth

Reference: Wikipedia | NOUN | Scholars |

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