What bears eat depends heavily on the species, habitat, season, and food available. There is no single “bear diet.” American black bears and many brown bears are highly flexible foragers, polar bears depend strongly on marine prey, giant pandas specialize on bamboo, and sloth bears are unusually adapted for eating ants and termites. That diversity … Read more
Brown bears and grizzly bears are the same species: Ursus arctos. The difference is mainly in how people use the common names, especially in North America. “Brown bear” is the broad species name, while “grizzly” is commonly used for many inland North American populations. Coastal Alaskan bears are often called brown bears. That does not … Read more
Black bears, brown bears, and polar bears are three different bear species with very different bodies, ranges, diets, and lifestyles. American black bears are Ursus americanus, brown bears are Ursus arctos, and polar bears are Ursus maritimus. The quickest way to separate them is not fur color. It is to combine body shape, head and … Read more
There are eight living bear species in the family Ursidae. They are the American black bear, brown bear, polar bear, Asiatic black bear, sun bear, sloth bear, Andean bear, and giant panda. That list includes animals adapted to Arctic sea ice, temperate forests, tropical forests, high mountains, insect-rich landscapes, and bamboo-covered slopes. The eight types … Read more
Carnivorans matter in ecosystems for far more reasons than simply eating other animals. Members of the mammalian order Carnivora can act as large predators, mid-level predators, scavengers, omnivores, seed dispersers, diggers, nutrient movers, and aquatic consumers. The importance of any one role depends on the species, its abundance, the habitat, available food, competitors, and the … Read more
Carnivorans live in an unusually broad range of environments. Members of the mammalian order Carnivora occur in tropical forests, temperate woodlands, grasslands, deserts, mountains, tundra, rivers, wetlands, coastlines, Arctic sea ice, and the open ocean. That range includes familiar land mammals such as cats, dogs, bears, raccoons, mongooses, and skunks, as well as semi-aquatic otters … Read more
Carnivoran social behavior spans a much wider range than the familiar image of a wolf pack or lion pride. Some members of the order Carnivora spend most of their adult lives alone, others form long-term pairs or family groups, and some live in packs, prides, clans, cooperative groups, or dense seasonal breeding gatherings. Even within … Read more
Carnivoran senses are not built around one universal superpower. Cats, dogs, bears, mustelids, hyenas, raccoons, seals, and their relatives solve very different sensory problems, so they do not rely on smell, hearing, vision, or touch in exactly the same way. A stalking cat benefits from detecting faint movement in dim light. A canid following a … Read more
Carnivorans communicate through more than howls, roars, growls, and barks. Members of the order Carnivora also exchange information with scent, facial expression, ear and tail position, body posture, touch, and combined signals. A solitary cat scent-marking, a wolf pack howling, a spotted hyena pasting odor onto grass, and a sea lion mother calling to her … Read more
Carnivorans use far more feeding strategies than the familiar image of a big predator chasing prey. Some cats stalk and ambush. Wolves can pursue large prey cooperatively. Bears dig, graze, pick berries, catch fish, and search for insects. Raccoons probe and manipulate objects. Sea otters dive for bottom-dwelling invertebrates. Pinnipeds pursue prey underwater. Giant pandas … Read more
