1. Dogs
* Characteristics:
* Fur-covered body
* Warm-blooded
* Give birth to live young
* Have mammary glands that produce milk
* Behavior:
* Dogs are social animals that live in packs
* They are intelligent and trainable, making them popular pets
* Dogs have a keen sense of smell and hearing, making them useful for hunting and tracking
2. Elephants
* Characteristics:
* Largest land animals on Earth
* Have trunks, which are long, flexible noses used for breathing, smelling, and drinking
* Have tusks, which are long, curved teeth used for defense and digging
* Have thick, wrinkled skin that helps them stay cool in hot climates
* Behavior:
* Elephants are social animals that live in herds
* They are intelligent and have complex social structures
* Elephants are herbivores and eat a variety of plants, including grasses, leaves, and bark
3. Dolphins
* Characteristics:
* Fully aquatic mammals found in oceans and rivers worldwide
* Have streamlined bodies and powerful tails that help them swim quickly and efficiently
* Have blowholes on top of their heads, which they use to breathe air
* Have sonar, a natural ability to produce high-frequency sounds and use the echo to find prey and navigate
* Behavior:
* Dolphins are highly social animals that live in pods
* They are intelligent and have complex communication systems
* Dolphins are carnivores and eat a variety of fish, squid, and crustaceans