Animal, (kingdom Animalia), any of a group of multicellular eukaryotic organisms (i.e., as distinct from bacteria, their deoxyribonucleic acid, or DNA, is contained in a membrane-bound nucleus). They are thought to have evolved independently from the unicellular eukaryotes. Animals differ from...

Browse Subcategories:
Displaying Featured Animals Articles
See All Animals Articles
Britannica presents a time-travelling voice experience
Guardians of History