Baby Animals

Sloths' slow-paced lifestyle is a survival strategy, not a sign of laziness

Sloths Don't Just Live in Slow-Mo, They Can Put Their Metabolism On Pause

Unlike most mammals, sloths don't use vast amounts of energy when it's hot, instead opting to slow down and conserve power, more like birds or reptiles

“It is especially exciting to see Sukiri bonding with and successfully raising these cubs,” says the Zoo's cheetah biologist Adrienne Crosier.

New Cheetah Mom Earns High Marks Caring for Her Three New Smithsonian Cubs

Cubs born to Sukiri on September 22 are latest in the National Zoo’s efforts to diversify gene pool of captive born cheetahs

Smith spotted the elusive creature while searching for rare flowers in the Wondiwoi mountain range

Elusive Tree Kangaroo Spotted for First Time in 90 Years

An amateur botanist spotted the Wondiwoi tree kangaroo in the remote mountains of West Papua, New Guinea

Giant pandas put it all out there when calling out for love.

Giant Panda Mating Calls Say a Lot About Them

Panda love grunts are packed with information, like size of the potential mate and more, but long distance calls are less reliable

Five Baby Squirrels Saved From Truly Knotty Predicament

Five gray tree squirrels in Wisconsin were found with their tails hopelessly knotted together, requiring some help from a wildlife rehab

The wolf cub is the better-preserved of the two specimens, with everything from its fur to its tail and curled upper lip still intact

Gold Miners Unearth 50,000-Year-Old Caribou Calf, Wolf Pup From Canadian Permafrost

Both animals' fur, skin and muscle are almost perfectly preserved

Chimps and Toddlers Use Same Gestures to Get Attention

A new study shows 12 to 24 month old children and chimps use 46 of the same movements to communicate, including stomping, pointing and clapping

Young grassland birds don't rush their final nest exit. They instead stick around as long as possible to gobble up as much food as they can stomach.

These Teen Birds Love Sleeping In, Too

A new study suggests young grassland songbirds postpone fledging in order to mooch off mom and dad as long as they can

Until now, it’s been unclear whether the bonnethead's seagrass consumption was intentional or the result of indiscriminate feeding

Fish Are Friends, Not (Always) Food: Meet the World’s First Omnivorous Shark Species

Bonnethead sharks enjoy a diet of up to 60 percent seagrass, as well as crab, shrimp, snails and bonyfish

Extinct Baby Horse—Its Skin and Hair Intact—Found in the Siberian Permafrost

The foal lived between 30,000-40,000 years ago

Young birds that grew up with added urban background noise showed signs of faster aging than birds without.

Noise Pollution Might Cut Birds’ Lives Short

Stressed out teen birds have enough to deal with—noise seems to be one factor that could seal their fate

Chihuahuas were one of the top three breeds represented in the study's sample of more than 900 shelter dogs

Genetic Testing Shows Animal Shelters Often Misidentify Dogs' Breeds

Shelter staff correctly identified a pup's primary or secondary breed just 67 percent of the time

The science behind the uptick in cheetah births includes a new fecal hormone method to determine pregnancy in the animals.

Zoo Announces Another Seven Adorable Cheetah Cubs Are Born

With wild populations threatened, emerging and new techniques in the breeding science is growing ever more critical

No calves have been born over the past three years, and the current orca population is only 75

Pacific Northwest Orca Population Hits 30-Year-Low

Declining salmon population, pollution and noise disturbance pose largest threats to the killer whales’ survival

The two surviving northern white rhinos, a mother and daughter, are both infertile

With Hybrid Embryo, Scientists Are One Step Closer to Saving the Northern White Rhino

Hybrid embryos were created using northern rhinos’ frozen sperm, southern rhinos’ eggs

Koala populations are expected to drop by 50 percent over the next 20 years

Newly Mapped Koala Genome Unlocks Secrets of Marsupial’s Diet, Susceptibility to Chlamydia

The cuddly creatures can survive on a diet of high-toxin eucalyptus leaves thanks to detoxifying genes

Izzy photographed with the two infants on her back on Friday, June 30.

National Zoo Reports Death of Infant Golden Lion Tamarin

The golden lion tamarin and its sibling were born on Friday, marking the first births of tamarins for the Zoo in a decade

Mei Xiang, the female panda in residence at the Smithsonian's National Zoo, may be pregnant with a cub to be born later this summer.

A Primer on the Zoo’s Possibly Pregnant Giant Panda

In anticipation of a potential new cub, here’s a refresher on Mei Xiang and Tian Tian’s storied past

A wildlife biologist checks a big brown bat for signs of white nose syndrome, which can cause tears or even dime-sized holes in their delicate wings.

Three Ways Bats Could Bounce Back From Devastating White Nose Syndrome

Scientists are testing light therapy, a fungus-killing fungus—and maybe, doing nothing

Don't you just want to squish that wittle face?

What Dogs Really Think of Your 'Puppy' Voice

Dog-directed speech may improve animals' attention skills and strengthen human-pupper bonds

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