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What are the different types of animals in the world?
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The most common types of animals include mammals, birds, reptiles, amphibians, fish, insects, and arachnids. Mammals are warm-blooded animals that have hair and give birth to live young, while birds are warm-blooded animals that lay eggs. Reptiles and amphibians are cold-blooded animals that typically lay eggs, but some species can give birth to live young. Fish are aquatic animals that usually lay eggs. Insects are small animals with wings, antennae, and a hard exoskeleton. Arachnids are also known as spiders and scorpions, and they are arthropods with eight legs.