Sequoia and Adira were spayed on Thursday, Jan. 9, 2020. The surgery requires incisions between the protective muscles on the animal's abdomen. Although this is a common procedure, any surgery requiring anesthesia is complex and the recovery can run into complications, especially with wild animals that can't be examined as closely in the days following surgery. Although complications are rare, they are possible, and can be very serious.
The animal care team made the decision to perform spay surgeries on Sequoia and Adira because unspayed big cats are more likely to experience health problems later in life, such as cancer and hormonal imbalance that can cause infection. The mountain lions also needed to be spayed to avoid attracting wild mountain lions to their exhibit during times of estrus, which can be dangerous for animals and our guests. Our third mountain lion sibling, male Sitka, was neutered on the same day that the females were spayed. The neutering procedure is less complex than the procedure for females, and Sitka appears to be recovering well.
"We first noticed swelling around Sequoia's incision mid-last week, which isn't unusual," said Dr. Jon Romano, Cheyenne Mountain Zoo head veterinarian. "We treated her with anti-inflammatory medications and antibiotics and continued daily checks while limiting her physical activity. I personally assessed Sequoia on Saturday night and was satisfied with her progress. Sunday morning, we discovered her surgical site had opened up overnight."
Sequoia's team rushed her to the veterinary clinic, where they addressed her complications. She survived the emergency surgery, but remained in critical condition and unfortunately passed a few hours later.
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