Largest organisms one of the largest and oldest clonal colonies on Earth. Among animals, the largest species are all marine mammals, specifically whales. The blue whale is believed to be the largest animal to have ever lived. The largest land animal classification is also dominated by mammals, with the African bush elephant being the most massive of these. The largest single-stem tree by wood volume and mass is the giant sequoia ("Sequoiadendron giganteum"), native to Sierra Nevada and California; it typically grows to a height of and in diameter. Multiple-stem trees such as banyan can be enormous. Thimmamma Marrimanu in India spreads
Animal welfare in the United States Animal welfare is concerned with the humane treatment of animals but does not oppose all uses of animals, while animal rights is concerned with ending all human use of animals. The largest American animal nonprofit, The Humane Society of the United States (HSUS), is an animal welfare organization. PETA, Farm Animal Rights Movement (FARM), and Direct Action Everywhere (DxE) are animal rights organizations based in the U.S. The activities of animal welfare and rights organizations include lobbying for animal protection legislation and better corporate animal welfare policies (e.g. cage-free egg campaigns), promoting reductions in animal product consumption, and conducting undercover