How this important step presents a unique challenge to zookeepers.

The next step is making sure the elephant calf figures out how to start nursing on its own.

Learn all about these fast-growing African mammals.

There's a lot to discover.

With mom at his back, he's ready to take on the world.

Watch her get introduced to a Nubian ibex, a Barbary sheep, a Turkomen markhor, a sitatunga, and a Transcaspian urial.

It's the 94th southern white rhino born at the San Diego Zoo since 1972, and mom Casey's second baby.

Learn all about how giraffe calves are born and reared.

Every calf born is very important to the gene pool.

Meet Chutti the rhino calf and his best buddy, Moo Moo Kitty the baby ankole cow.

Giraffes on average are six feet at birth, but this little guy measured in a little shorter than usual.

This is the 94th birth of a southern white rhino born at the San Diego Zoo Safari Park, which is significant due to their endangered status.

Why zookeepers have to do bottle feedings with him five times a day.

Like most of the zoo's calves, the baby got up quickly - within minutes of being born. See what milestones zookeepers are looking for next.

Her birth is significant due to the southern white rhino's endangered status.

Cuteness overload!

"This baby will triple her birth weight in the first two months of her life."

Watch the youngest, and most curious baby in San Diego Zoo's nursery corral interact with her new playmates.

Born on a ranch in Texas, Hero the cow was rejected by his mother and given to an owner who didn't have much knowledge in taking care of a cow. After being left out in the cold for days on end, Hero lost both of...

The greater one-horned rhino calf and her mom, Tanaya, explore the Asian Plains exhibit for the first time as they join the rest of the group.

See the 13-day-old calf strut around and "test his tiny trunk" as staff help raise the little guy at the San Diego Zoo.

Hippo Calf Learns to Sink or Swim with Mom

See why it's such a big day at the San Diego Zoo nursery.

The manatee is a gentle and peaceful giant of the sea, known for its large size and herbivorous diet. Despite their appearance, manatees lack the necessary fat to survive in colder waters, making them restricted to temperate areas. They...