Animals Facts
- Human colds and other illnesses can also affect Gorillas.
- New-born Chinese water deer will be so small that it can be held in human palm.
- Turtles, water snakes, crocodiles, alligators, dolphins, whales and other water creatures will drown if they are kept in underwater too long.
- Elephants and humpback whales are the only mammals that undergo menopause.
- Yorkshire Terrier is the world's smallest dog which weighs just four ounces.
Classification of Animals
All around the world many different types of animals are present. Many animals are quite similar to each other while others are different from others. So animals can be classified based on their similarities.
The whole animal kingdom is divided into two main groups. They are Vertebrates and Invertebrates.
Animals with backbone are called vertebrates. They are found in land, oceans, rivers, forests, mountains and even in deserts. This group can be further divided into smaller groups by their characteristics. They are fish, amphibians, reptiles, birds, and mammals.
Animals that lack the backbone are called invertebrates. About 97% of the animal kingdom is made up of the invertebrates. These animals are found in lands, ponds, oceans and other water bodies. They are six groups of invertebrates. They are annelids, mollusks, arthropods, arachnids, echinoderms and protozoa.
