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Chicago Animal Care and Control Executive Director Kelley Gandurski poses for a picture with Ashley, a 6-year-old stray dog available for adoption. (Alex Ruppenthal / WTTW)

Chicago Animal Care and Control was so packed with cats late last summer that it sent out an urgent call for adoptions. Now, the department seems to have found a solution to one of its biggest challenges: overcrowding.

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A chimpanzee in the Goualougo Triangle, part of the Nouabale-Ndoki National Park in the Republic of Congo. (Kyle de Nobrega / Wildlife Conservation Society)

The complex and relatively advanced cultures of chimpanzees are disappearing as human beings encroach on previously undisturbed areas of African forest, according to a new study involving researchers from Lincoln Park Zoo.

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Kristin Dvorak, an assistant lead bird keeper at Lincoln Park Zoo, recently traveled to South Africa as part of an international effort to rehabilitate 1,800 abandoned flamingo hatchlings. (Courtesy Lincoln Park Zoo)

A severe drought earlier this year forced a large group of flamingos to flee a nesting site in South Africa. That’s when Lincoln Park Zoo and other wildlife conservation groups from around the world stepped in.

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The century plant at Garfield Park Conservatory stands about 17 feet, 6 inches tall on Monday, March 4, 2019.

For more than half a century, a plant at the Garfield Park Conservatory has been growing slowly and imperceptibly. Until last fall. We visit the rapidly ascending century plant.

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A male giant anteater pup was born at Brookfield Zoo on Dec. 15, 2018. (Jim Schulz / Chicago Zoological Society)

The unnamed pup, born Dec. 15, can be seen alongside his mom on select days in the zoo’s “Tropic World: Africa” exhibit.

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Valentino, a small African antelope, was born Thursday at Brookfield Zoo. (Cathy Bazzoni / Chicago Zoological Society)

The tiny African antelope born on Valentine’s Day was euthanized Tuesday, according to zoo officials, who identified a birth defect that affected the animal’s ability to swallow normally.

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David, a young male pangolin, is part of Brookfield Zoo’s “Habitat Africa! The Forest” exhibit. (Credit: Chicago Zoological Society)

Researchers estimate that more than one million pangolins have been taken from the wild over the past decade as demand has soared for their meat and scales. What one local institution is doing to save these scaly anteaters.

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Shirlee, a Blanding’s turtle, as a new hatchling in 2017 (Courtesy Forest Preserve District of DuPage County)

A rare yellow-hued Blanding’s turtle who called Chicago home has moved out to the suburbs, where she’s helping to spread the word about the plight of her endangered species throughout Illinois.

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Valentino, a small African antelope, was born Thursday at Brookfield Zoo. (Cathy Bazzoni / Chicago Zoological Society)

A tiny African antelope that belongs to one of the smallest species of its kind in the world received a name befitting his Feb. 14 birthday.

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NASA has sent a group of laboratory mice into orbit to study the physiological effects of living in space. (Courtesy NASA)

An ongoing NASA study aided by Northwestern researchers sent mice into orbit with the goal of learning more about the physiological effects of living in space. 

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An animal care specialist at Brookfield Zoo measures the girth of a dolphin. (Courtesy Chicago Zoological Society)

Unlike the industry serving health-conscious humans, there are no books, infomercials or 12-week programs to help dolphins optimize their diets. But there is an app for that, thanks to new research by animal welfare specialists.

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Chicagoans Darren and Genevieve Coady opened Coadys’ Point of View in Wisconsin last year. (Courtesy Genevieve Coady)

Chicagoans Darren and Genevieve Coady are getting ready for their first summer as owners of a lakeside resort in Wisconsin’s Northwoods. 

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A lioness drinks from a waterhole in Zambia’s South Luangwa National Park. (© Isak Pretorius, South Africa)

“Wildlife Photographer of the Year,” based on the prestigious photography competition of the same name, will feature 100 winning photos selected among 45,000 submissions from 95 countries. We preview the show.

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(Chicago Animal Care and Control / Facebook)

More than 90 percent of the 16,000-plus animals sheltered by Chicago Animal Care and Control last year were either adopted, transferred to a rescue group or returned to their owner, according to city data. 

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Swallows huddled together during a snowstorm (Keith Williams / Flickr)

Unlike humans, birds do not have the luxury of high-powered heating systems to keep warm in the winter, but they do have a variety of unique adaptations to help them survive.

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Morning commuters face a tough slog on Wacker Drive in Chicago, Monday, Jan. 28, 2019. (Rich Hein / Chicago Sun-Times via AP)

Those seeking refuge from this week’s bitter cold at one of Chicago’s public warming centers should not assume their dog or cat will be allowed in with them.