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Stingrays and manta rays are both flat-bodied cartilaginous fish, but they are very different animals. Stingrays are usually bottom-dwelling rays with a whip-like tail that may carry a venomous spine. Manta rays are giant, open-water filter feeders with wide wing-like fins, horn-shaped cephalic fins
A fry is a baby fish. Learn what “fry” means, why young fish are called fry, and the differences between fry, larvae, alevins and fingerlings.
Animals leaving Yellowstone is usually normal seasonal movement, not a sign of a volcanic eruption. Yellowstone is not a fenced zoo; it is part of the larger Greater Yellowstone Ecosystem. Bison, elk, pronghorn, wolves, bears, and other animals may move across park boundaries for food, snow conditio
Fruit flies and gnats are both tiny indoor flies, but they usually come from different sources. Fruit flies are small tan flies that gather around ripe fruit, fermenting liquids, trash, drains, and sugary residue. Gnats are a broader group of tiny flies; indoors, they are often fungus gnats that liv
Squirrel poop and rat poop can look similar, but there are useful clues. Squirrel droppings are usually oval, rounded, slightly thicker, and often found in attics, near nests, or under entry points. Rat droppings are usually darker, more elongated, and may be pointed or capsule-shaped, often scatter
Gnats and fruit flies are both tiny flying insects, but they are not the same thing. “Gnat” is a broad informal name for several small flies, often fungus gnats found around damp houseplant soil. Fruit flies are usually Drosophila flies attracted to ripe, rotting, or fermenting fruit. If tiny flie
Sockeye salmon and Atlantic salmon are different salmon species from different branches of the salmon family. Sockeye salmon are Pacific salmon known for deep red flesh, strong flavor, and dramatic red spawning color. Atlantic salmon are native to the North Atlantic, often larger, milder in flavor,
A black panther is not a separate species, while a jaguar is a real big cat species. In the Americas, a “black panther” usually means a melanistic jaguar: a jaguar with extra dark pigment. In Africa or Asia, a black panther usually means a melanistic leopard. So a black panther can be a jaguar, bu
Ostriches and emus are both large flightless birds, but they are not the same animal. Ostriches are native to Africa, grow much taller and heavier, have two toes on each foot, and can run faster. Emus are native to Australia, are smaller, have three toes, shaggy brown feathers, and lay dark green eg
A liger and a tigon are both lion-tiger hybrids, but they are not the same animal. A liger has a male lion father and a female tiger mother, while a tigon has a male tiger father and a female lion mother. Ligers usually grow much larger than both parent species, while tigons are usually closer to li
Bobcats and mountain lions are both wild cats, but they are very different animals. A bobcat is a medium-sized lynx with a short “bobbed” tail, spotted coat, and tufted ears. A mountain lion is much larger, with a long tail, plain tawny coat, and powerful body. If you see a large cat with a tail a
Mastodons and mammoths were both extinct elephant-like mammals, but they were not the same animal. Mammoths were closer relatives of modern elephants and usually had high-domed skulls, long curved tusks, and ridged teeth for grazing. Mastodons belonged to a more distant branch, had flatter heads, st
Pteranodon and pterodactyl are often confused, but they are not the same animal. Pteranodon was a large, toothless pterosaur from Late Cretaceous North America with a long skull crest and huge wings. “Pterodactyl” is a casual word often used for many pterosaurs, but the real genus Pterodactylus wa
Carpenter bees and bumble bees are both large, black-and-yellow pollinators, but they are easy to separate. Carpenter bees usually have a shiny, mostly hairless abdomen and nest by tunneling into wood. Bumble bees are fuzzier all over, including the abdomen, and usually nest in the ground or hidden
Seals and sea lions are both marine mammals called pinnipeds, but they are easy to tell apart. Sea lions have visible external ear flaps, long front flippers, and can rotate their hind flippers forward to walk on land. True seals have no external ear flaps, shorter front flippers, and move on land b
English and American Labradors are the same breed, Labrador Retriever, but they are different “types.” English Labs are usually show or bench-bred dogs with a stockier body, broader head, thicker neck, and calmer style. American Labs are usually field or working-bred dogs with a leaner body, longe
Hawks and eagles are both birds of prey, but eagles are usually larger, heavier, broader-winged, and more powerful. Hawks are generally smaller, faster, and more agile, often hunting birds, rodents, reptiles, or insects. Eagles can take larger prey, soar for long distances, and have massive beaks an
Squirrels and chipmunks are close relatives, but they are not the same animal in everyday use. Chipmunks are small, striped, mostly ground-dwelling members of the squirrel family. Common tree squirrels are larger, have bushier tails, spend more time climbing trees, and usually lack bold facial strip