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Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth. Animal body lengths range from 8.5 μm (0.00033 in) to 33.6 m (110 ft).
- Kingdoms
The hierarchy of biological classification's eight major...
- Bilateria
Bilateria (/ ˌ b aɪ l ə ˈ t ɪər i. ə / BY-lə-TEER-ee-ə) is a...
- Animal (Disambiguation)
People. The Animal (nickname), a list of people nicknamed...
- Animalia (Disambiguation)
Animal (disambiguation) Animality (disambiguation) This page...
- Tardigrada
Naming Johann August Ephraim Goeze. Johann August Ephraim...
- Arthropoda
Arthropoda is the largest animal phylum with the estimates...
- Lists of Animals
List of animal names (male, female, young, and group) By...
- List of Animal Names
List of animal names - Wikipedia. Mother sea otter with...
- List of Mammals in Canada
A mammal (from Latin mamma 'breast') is a vertebrate animal...
- Portal:Animals
It has been estimated there are as many as 7.77 million...
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There are many different types of animals. The common animals most people know are only about 3% of the animal kingdom. When biologists look at animals, they find things that certain animals have in common. They use this to group the animals in a biological classification. Several million species may exist, but biologists have only identified about...
The animal mode of nutrition is called heterotrophic because they get their food from other living organisms. Some animals eat only plants; they are called herbivores. Other animals eat only meat and are called carnivores. Animals that eat both plants and meat are called omnivores. Some animals get their energy from photosynthetic protiststhat live...
In scientific usage, humans are animals. But in everyday use, humans are often not regarded as animals.
Ethology, the study of animal behaviourA mammal ( from Latin mamma 'breast') is a vertebrate animal of the class Mammalia ( / məˈmeɪli.ə / ). Mammals are characterized by the presence of milk-producing mammary glands for feeding their young, a neocortex region of the brain, fur or hair, and three middle ear bones.
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