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1 day ago · The three largest orders in numbers of species are Rodentia: mice, rats, porcupines, beavers, capybaras, and other gnawing mammals; Chiroptera: bats; and Soricomorpha: shrews, moles, and solenodons.
In the following slides, we'll explore the basic characteristics all (or at least most) animals share—from snails and zebras to mongooses and sea anemones: multicellularity, eukaryotic cell structure, specialized tissues, sexual reproduction, a blastula stage of development, motility, heterotrophy, and possession of an advanced nervous system.
4 days ago · The family is generally divided between cats from the subfamily Pantherinae, which roar (including lions, tigers, and leopards), and cats from the subfamily Felinae, which purr instead (including cougars, bobcats, and domestic cats).
2 days ago · The lion is an apex and keystone predator; although some lions scavenge when opportunities occur and have been known to hunt humans, lions typically do not actively seek out and prey on humans. The lion inhabits grasslands, savannahs, and shrublands.
2 days ago · Bears are carnivoran mammals of the family Ursidae (/ ˈɜːrsɪdiː, - daɪ /). They are classified as caniforms, or doglike carnivorans. Although only eight species of bears are extant, they are widespread, appearing in a wide variety of habitats throughout most of the Northern Hemisphere and partially in the Southern Hemisphere.
4 days ago · Dinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years. Most died out by the end of the Cretaceous Period. Many lines of evidence show that one lineage evolved into birds about 155 million years ago.
4 days ago · bird, (class Aves), any of the more than 10,400 living species unique in having feathers, the major characteristic that distinguishes them from all other animals.
