Lincoln Park Zoo Euthanizes Its Oldest Lion

Lincoln Park Zoo Euthanizes Its Oldest Lion

If you visited the Lincoln Park Zoo in the last 18 years, you probably heard the magnificent roar of Adelor, the "king" of the zoo's big cats, whose thunder-like cries could literally be felt deep in your own chest.

The elderly African lion was put to rest today after suffering a variety of geriatric health problems. He was 18 years old, which is 4 years older than the median life expectancy for lions. You can visit his online memorial here, and share your own thoughts and memories.

Zoologist Mark Kamhout says Adelor "was a wonderful leader of the pride and was very protective and affectionate of the females under his care."

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