1. Primates: This order includes monkeys, apes, and humans. They are characterized by their five-fingered hands, five-toed feet, and large brains.
2. Carnivora: This order includes meat-eating mammals such as lions, tigers, bears, and wolves. They have sharp teeth and claws adapted for hunting.
3. Cetacea: This order includes whales, dolphins, and porpoises. They are adapted for aquatic life with streamlined bodies and flippers.
4. Artiodactyla: This order includes even-toed ungulates like cows, pigs, deer, and hippos. They have two or four toes on each foot and are herbivores.
5. Rodentia: This order includes rodents like rats, mice, squirrels, and beavers. They have continuously growing incisors that they use for gnawing.
6. Perissodactyla: This order includes odd-toed ungulates like horses, zebras, and rhinoceroses. They have one or three toes on each foot and are herbivores.
This is just a small selection of the diverse range of mammals that exist. There are many other fascinating orders, each with its own unique characteristics!