Animals are multicellular eukaryotes whose cells are bound together by collagen. Animals dominate human conceptions of everyday living on Earth due to their dimension, diversity, abundance, and mobility. The presence of muscles and mobility is probably the Main characteristics in the animal kingdom. Birds are feathered, egg-laying vertebrates, most of https://animalxxx62605.wikigdia.com/7232469/5_simple_techniques_for_animal_sex