Lifestyle Pets 3 Snow Leopards Die from COVID Complications at Nebraska Zoo: 'Truly Heartbreaking' The trio of big cats tested positive for the virus in mid-October, according to officials from the Lincoln Children's Zoo By Abigail Adams Abigail Adams Instagram Twitter Digital News Writer, PEOPLE People Editorial Guidelines Published on November 13, 2021 06:08 PM Share Tweet Pin Email Trending Videos Photo: Lincoln Childrens Zoo/Youtube Three snow leopards have died from COVID-19 complications at the Lincoln Children's Zoo in Nebraska, zoo officials said in a statement on Friday. The trio of big cats — Ranney, Everest, and Makalu — tested positive for the virus in October, according to a previous statement shared on Facebook. "It is with deep sadness that we inform our community that three snow leopards at the Lincoln Children's Zoo have passed away due to complications of COVID-19," said zoo officials in Friday's statement, adding that the leopards "were beloved by our entire community inside and outside of the zoo." "This loss is truly heartbreaking, and we are all grieving together," the statement said. Rare Snow Leopard with COVID-19 Symptoms Dies at South Dakota Zoo: 'A Deep Wound' Meanwhile, two of the zoo's Sumatran tigers, Axl and Kumar, "have made a seemingly full recovery from their illness" after testing positive for COVID in October, according to the statement. "Given the substantial distance between the animals and visitors, the public is not, nor has been, at any risk," zoo officials said. "No other animals at the Zoo are showing any signs of infection." A "thorough" investigation conducted by the zoo determined there was "no evidence to pinpoint the source of the infection." 11 Lions and 2 Tigers Test Positive for COVID at Denver Zoo Ranney and Everest were "pretty much inseparable" while living at the facilities in Lincoln, Neb., according to a video posted by the zoo on YouTube in April 2020. Snow leopards are typically found in 12 mountainous countries in central Asia, according to the World Wildlife Foundation. The species' population is considered vulnerable. Lincoln Childrens Zoo/Youtube Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. On Oct. 7, a 2 ½-year-old snow leopard died at the Great Plains Zoo in South Dakota after showing symptoms of COVID. The cat named Baya first exhibited symptoms one day after a tiger named Keesa "tested positive for the virus that causes COVID-19." Baya experienced "a rapid decline of respiratory function" before she ultimately passed away at the zoo in Sioux Falls. Later that month, 11 lions and two tigers at the Denver Zoo in Colorado tested positive for COVID.