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State Symbol Listings
Find profile, botanical name, adoption date and details, description, and a photo of the official or representative State Animal or State Mammal of each of the states that have adopted one.
Animals and Mammals Diversity
The evolution of the class Mammalia has produced tremendous diversity in form and habit. Living kinds range in size from a bat weighing less than a gram and tiny shrews weighing but a few grams to the largest animal that has ever lived, the blue whale, which reaches a length of more than 100 feet and a weight of 200 tons. Every major habitat has been exploited by mammals that swim, fly, run, burrow, glide, or climb.
There are approximately 5,000 species of living mammals, arranged in
about 125 families and 26 orders (familial and ordinal groupings sometimes vary among authorities).The rodents (order Rodentia) are the most numerous of existing
mammals, in both number of species and number of individuals, and are one of the most diverse of living lineages. In contrast, the order Tubulidentata is represented by
a single living species, the aardvark. The Uranotheria (elephants and their kin) and Perissodactyla (horses, rhinoceroses, and allies) are examples of orders in which
far greater diversity occurred in the late Paleogene and Neogene periods (about 30 million to about 3 million years ago) than today.
Mammals are vertebrates (backboned animals) that feed their young on mother's milk.
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