Animal Kingdom Part 5

Amphibia:

• 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).

• Examples include frogs, toads, salamanders, and newts.

• 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:

• Reptiles are cold-blooded vertebrates that are primarily terrestrial but can include some semi-aquatic species.

• They have scales on their skin, which help reduce water loss.

• Examples include snakes, lizards, turtles, crocodiles, and tuatara.

• Most reptiles lay eggs, but some give birth to live young.

Aves:

• Aves represents the class of birds.

• Birds are warm-blooded vertebrates with feathers, beaks, and lay hard-shelled eggs.

• They have adaptations for flight in most cases.

• Examples include sparrows, eagles, penguins, and ostriches.

Mammalia:

• Mammals are warm-blooded vertebrates characterized by having hair or fur, mammary glands, and typically giving birth to live young.

• They have a wide range of ecological adaptations and are found in various habitats.

• Examples include humans, dogs, cats, elephants, and dolphins.