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The sun sets over a quiet backyard garden. A red fox sneaks into the yard, its nose in the air, sniffing loudly—it smells something. It pads over to the bushes when a streak of brown flashes in the greenery. An eastern cottontail rabbit darts out of the bushes, zigging and zagging to throw the surprised fox off of its trail. The speedy rabbit zooms into the nearby woods, easily escaping the potential predator.
All the zigging and zagging they do makes it harder for other animals to catch them

This dino had a nine-inch-thick skull.
to recent research, youngsters might’ve had had spikier skulls and no dome at all

Some species of cicada live as long as 17 years, though most of the time is spent underground. There are two groups of cicadas: annual cicadas and periodical cicadas.
These bugs all emerge from the ground at the same time.

Axolotls (pronounced ACK-suh-LAH-tuhls) are salamanders! Thes amphibians spend their whole lives underwater. They exist in the wild in only one place on Earth—the lake complex of Xochimilco (pronounced SO-chee-MILL-koh), a network of artificial channels, small lakes, and temporary wetlands that help supply water to the millions of residents in nearby Mexico City. Axolotls have long fascinated scientists for their ability to regenerate lost body parts and for their rare trait of neoteny, which means they retain larval features throughout life. Rather than undergoing typical metamorphosis, axolotls keep their youthful appearance, including their tadpolelike dorsal fin and feathery external gills that fan out from the head. As they age, axolotls simply get bigger and bigger, like amphibious Peter Pans. In rare cases, axolotls have matured past the larval stage and emerged onto land as adult salamanders. Neoteny doesn’t affect the axolotl’s ability to breed. Females mate with males and lay eggs underwater. As Mexico City has grown, the lake complex has shrunk and parts have become contaminated, distressing the axolotl population. The introduction of large numbers of carp and tilapia fish, which compete with axolotls for food and also eat axolotl eggs, has further lowered their population. A 2009 survey suggests there are fewer than 1,200 axolotls in the Xochimilco Lake complex. Axolotls feast on a menu of mollusks, worms, insect larvae, crustaceans, and some fish.
Not all axolotls are pink!

Learn about the 2026 Almanac!
Did you know that all bugs are insects, but not all insects are bugs?

From extra-fluffy fliers to chatty chirpers, these owls are utterly outstanding.
Scientists think barn owls, which live on all continents except Antarctica, might

Bison are the iconic image of the Great Plains and the Old West. They are massive, shaggy beasts and the heaviest land animals in North America. Despite their hefty size, bison are quick on their feet. When the need arises they can run at speeds up to 40 miles (65 kilometers) an hour. Their curved, sharp horns can grow to be 2 feet (61 centimeters) long. Females (cows) and adult males (bulls) generally live in small, separate bands and come together in very large herds during the summer breeding season. Males wage battles for mating rights, but such contests rarely turn dangerous. Females give birth to one calf after a nine-month pregnancy. Bison once covered the Great Plains and much of North America, and were critically important to Plains Indian societies. During the 19th century, settlers killed some 50 million bison for food, sport, and to deprive Native Americans of their most important natural asset. The once enormous herds were reduced to only a few hundred animals. Today, bison numbers have rebounded somewhat, and about 200,000 bison live on preserves and ranches where they are raised for their meat.
While buffalo and bison are both mammals within the Bovidae family, the two are not all

Find out why these cute marsupials act like giraffes, koalas, and bats.
Tree-loving koalas have strong, large paws made for gripping branches all day.

Porcupines are lumbering, rotund rodents with needle-like spikes, called quills, covering their back, sides, and tail. A single porcupine can have more than 30,000 quills, which are actually sharp bristles of fused hair. When another animal attacks the porcupine, its quills detach, burrowing into the adversary’s flesh and inflicting painful, potentially deadly wounds. It’s easy to tell when porcupines are mad: They stomp their feet, hiss, and shake their quills, which normally lie flat against the porcupine’s body. While porcupines are rarely aggressive, they’ll defend themselves by charging or swatting their spiked tail at opponents. Porcupines are herbivores, eating leaves, plants, fruit, and the tender layer of tissue beneath the bark of trees. A porcupine can fell a whole tree if it removes too much bark. The head and body of a porcupine is between 25 to 36 inches (60 to 90 centimeters). And the tail can add another 8 to 10 inches (20 to 25 centimeters) to the entire length.
Photograph by Glenn Bartley / All Canada Photos / Alamy Common Name: Porcupines

Not all brown bears are grizzlies: Grizzly bears are a subspecies of brown bear.