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Ramar, a 50-year-old western lowland gorilla, is the oldest animal at Brookfield Zoo. (Courtesy of Chicago Zoological Society)

Ramar, one of the oldest gorillas in the country, celebrated a milestone birthday this month with a frozen “cake” filled with fruit and raisins. 

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A male gray seal was born at Brookfield Zoo on Dec. 26. (Jim Schulz / Chicago Zoological Society)

Brookfield Zoo welcomed a newborn gray seal on Dec. 26. The male pup weighed 36 pounds at birth and is expected to weigh more than 120 pounds by the time he is weaned at three weeks. 

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Four specially-designed suction cups are used to attach a bio-logging device to the backs of bottlenose dolphins at Brookfield Zoo. (Alex Ruppenthal / Chicago Tonight)

Brookfield Zoo is leading a first-of-its-kind study to collect data from dolphins and other aquatic mammals using a Fitbit-like device that figures to revolutionize human understanding of the animals’ behavior.

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(Courtesy Chicago Zoological Society)

From siblings with snowballs to wrestling chimpanzees, playful behavior is usually easy to spot. But the question of why we play – and whether we all play for the same reasons – is less apparent.

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(Mexican Wolf Interagency Field Team / Chicago Zoological Society)

A Mexican wolf pup born this spring at Brookfield Zoo and released into the wild as part of a species recovery program was tracked down in New Mexico and is healthy, the zoo announced this week.

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(Courtesy Brookfield Zoo)

One of the oldest giraffes in a North American zoo died last week. At 27, she had surpassed the median life expectancy for giraffes, which is about 17-20 years.

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(Jim Schulz / Chicago Zoological Society)

One of Brookfield Zoo’s newest tenants recently emerged from her mom’s pouch and can now be seen at the zoo’s Australia House.  

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(Courtesy Chicago Zoological Society)

More than 125 animal welfare experts from around the world will gather in October to share new research and best practices related to caring for animals in zoos and aquariums.

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(Courtesy Chicago Zoological Society)

The colorful bird who lived to the ripe old age of 83 had a global fan base and seemed to enjoy being the center of attention. A year after his death, Brookfield Zoo is set to unveil a statue in his honor.

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(Jim Schulz / Chicago Zoological Society)

Zingo, the first black-crested mangabey born at the zoo, has light-colored skin that will darken over time. 

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(Courtesy of Chicago Zoological Society)

Sample more than 80 beers while taking in the zoo’s wildlife and nature at the sixth annual event.

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(Jim Schulz / Chicago Zoological Society)

After spending their first weeks learning to swim and bonding with their mothers, Lucy and Taylor make their public debut.

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Ramar, a 49-year-old western lowland gorilla, is the oldest animal at Brookfield Zoo. (Courtesy of Chicago Zoological Society)

Like many humans approaching their elder years, a 49-year-old western lowland gorilla named Ramar has been dealing with knee pain.

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(Courtesy of Brookfield Zoo)

Customized activity monitoring devices are helping Brookfield Zoo staff study sleeping patterns and other behaviors in giraffes. 

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An okapi calf was born May 16 at Brookfield Zoo. (Chicago Zoological Society)

The striped “forest giraffe” is the 28th okapi to be born at the suburban zoo since 1959, when it became the first zoo in North America to have a birth of the species.

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For the first time, Brookfield Zoo is exhibiting a pangolin, a rare animal native to Africa and Asia. (Courtesy of Chicago Zoological Society)

For the first time, Brookfield Zoo is exhibiting a pangolin, a rare animal native to Africa and Asia.

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