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Animal | Definition, Types, & Facts | Britannica
Animal - Wikipedia
Animal Encyclopedia With Facts, Pictures, Definitions, and More!
Animal Pictures and Facts - National Geographic
Animal - Simple English Wikipedia, the free encyclopedia
Animals: A Complete Guide To The Animal Kingdom - Active Wild
Animalia - Online Animals Encyclopedia
Characteristics of animals | Britannica
Animal - Multicellular, Heterotrophic, Eukaryotes | Britannica
Types of Animals and Their Characteristics | Biology Explorer