Zari, just days before giving birth. (Lincoln Park Zoo / Twitter)

Lincoln Park Zoo announced it welcomed not one, not two, but three lion cubs on Monday. The zoo had been on lion watch since early December, when staff confirmed 4-year-old African lion Zari was pregnant.

Zari, Lincoln Park Zoo's 4-year-old African lion, is expecting a litter in January. Here she is with her cub, Pilipili, born in March 2022. (Lincoln Park Zoo / Diana Miller)

"A birth represents preservation of a species that has faced many challenges in the wild,” said Mike Murray, curator of mammals and animal behavioral husbandry.

Katrina Quint, director of horticulture at Lincoln Park Zoo, stands in the shadow of the zoo's oldest inhabitant, a bur oak that's 250-300 years old. (Patty Wetli / WTTW News)

A bur oak has towered over the zoo’s south lawn, opposite the primate house, since before there even was a zoo. It even predates the founding of the United States of America. 

(DSD / Pexels)

For the eighth year in a row, Chicago reigns supreme over Orkin’s Rattiest Cities list, but not everyone is convinced the city deserves the dubious distinction.

Monty in the foreground, Rose in the rear. (Credit: Ann Gunkle)

The beloved piping plover, dubbed the king of Montrose Beach, died May 13. Monty first captured Chicagoans’ hearts in 2019 when he and his mate, Rose, became the first pair of endangered Great Lakes piping plovers to nest in the city since the 1950s

The Field Museum’s historic egg collection is shedding new light on climate change. (Patty Wetli / WTTW News)

A new study led by the Field Museum shows that a number of bird species are laying their eggs nearly a month earlier than 100 years ago, likely due to climate change.

New mom Zari snuggling with her cub, barely visible in the lower part of the frame. (Lincoln Park Zoo)

The cub was born March 15, with its sex still unknown. Mom Zari and dad Jabari both arrived at the zoo in 2021 for the opening of the Pepper Family Wildlife Center.

Current zoo director Dr. Megan Ross, Ph.D., has been selected to lead the venerable institution when current president and CEO Kevin Bell steps down at the end of the year. (Credit: Lisa Miller)

Dr. Megan Ross, an animal behavior specialist, joined the zoo as curator of birds in 2000 and will be the first woman to lead the zoo in its 153-year history.

A Linnaeus’s two-toed sloth at Brookfield Zoo receives a COVID-19 vaccine. (Cathy Bazzoni / Chicago Zoological Society-Brookfield Zoo)

Animals at Brookfield Zoo have begun receiving COVID-19 vaccinations, with Lincoln Park Zoo soon to follow, as federal and state officials approved the use of the inoculations.

Monty and Rose's fourth piping plover chick, hatched at Lincoln Park Zoo. (Courtesy of Lincoln Park Zoo)

Two days after welcoming three healthy chicks, Chicago’s beloved piping plovers added a fourth hatchling to their growing family, thanks to a little help from wildlife officials.

Dr. Lester Fisher (Courtesy of Lincoln Park Zoo)

Dr. Lester Fisher has led a remarkable life, from taking care of Gen. George Patton’s bulldog Willie during his service in World War II to a more than four-decade association with Lincoln Park Zoo, where he started out as a part-time veterinarian. 

Meet Brookfield Zoo’s new mother-daughter Mexican wolves, Sibi and Lorena. (Jim Schulz / Chicago Zoological Society)

After self-imposed winter breaks, Lincoln Park Zoo and Brookfield Zoo are reopening to guests, with a number of safety precautions in place due to the coronavirus. Here’s what to expect.

Hudson, Brookfield Zoo’s 14-year-old polar bear, frolics in the snow. (Jim Schulz / Chicago Zoological Society)

Both Brookfield and Lincoln Park zoos will temporarily close during January and February, but they have plenty of online content in the works to remain connected with the public.

Paul Eberhart, a lead animal care specialist at Brookfield Zoo, spends some time with the Nigerian dwarf goats. (Jim Schulz / Chicago Zoological Society

For institutions with “living collections,” there’s really been no such thing as a shutdown during the pandemic. Even with no visitors coming through the door, zoos and aquariums are still caring for their animals around the clock.  

A baby Grevy's zebra was born at the Lincoln Park Zoo Aug. 14. (Christopher Bijalba / Lincoln Park Zoo)

The yet-to-be-named foal was born Friday. Grevy’s zebras are endangered in the wild due to habitat loss and hunting. 

(Courtesy Lincoln Park Zoo)

The 150-year-old zoo is preparing to welcome its first visitors since the March coronavirus shutdown. Here’s what you need to know.