Animal-Kingdom-Part-5
Amphibia:
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Amphibians are cold-blooded vertebrates that typically lead a dual life, spending part of their lives in water (larval stage) and part on land (adult stage).
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Examples include frogs, toads, salamanders, and newts.
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Amphibians are characterized by their moist skin, which is permeable to water and gases, and typically undergo metamorphosis from aquatic larvae to terrestrial adults.
Reptilia:
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Reptiles are cold-blooded vertebrates that are primarily terrestrial but can include some semi-aquatic species.
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They have scales on their skin, which help reduce water loss.
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Examples include snakes, lizards, turtles, crocodiles, and tuatara.
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Most reptiles lay eggs, but some give birth to live young.
Aves:
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Aves represents the class of birds.
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Birds are warm-blooded vertebrates with feathers, beaks, and lay hard-shelled eggs.
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They have adaptations for flight in most cases.
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Examples include sparrows, eagles, penguins, and ostriches.
Mammalia:
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Mammals are warm-blooded vertebrates characterized by having hair or fur, mammary glands, and typically giving birth to live young.
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They have a wide range of ecological adaptations and are found in various habitats.
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Examples include humans, dogs, cats, elephants, and dolphins.
