Tulsa Zoo announced the death of 23-year-old sea lion Dorsey. Dorsey had bone cancer and was euthanized April 19, according to the Zoo.
The zoo posted that staff had been monitoring changes in Dorsey's mobility since late 2015 and discovered cancer throughout the large bone of an upper flipper. They decided his quality of life had become significantly compromised.
Dorsey passed away in his exhibit holding area surrounded by his caregivers, the zoo posted on Facebook.
He was born at the zoo and lived most of his life there, with a brief stay at the Oklahoma City Zoo during construction of the Helmerich Sea Lion Cover.
“We know a great number of our zoo staff and friends have been able to connect with Dorsey over the years, and will want to take this time in remembrance," said Vice President of Animal Conservation & Science Joe Barkowski.