Otis Swings Into His Senior Years

Funding from the Minnesota Zoo Foundation enables the Zoo to provide the highest level of care to all its animal residents at every stage of life. So when Otis, a senior De Brazza’s monkey on the Zoo's Tropics Trail, was found to be experiencing discomfort due to age-related changes in his spine and joints, his care team sprang into action. 

In 2021, an annual exam revealed that Otis had developed spondylosis in his spine and osteoarthritis in his joints. These conditions cause pain and limit movement, so Otis was started on medication to manage his symptoms. But by January 2024, his stiffness was more noticeable, prompting the team to try something new — laser therapy. 

Laser therapy uses low-level light to reduce inflammation and promote healing. But before Otis could receive the treatment, he had to be trained to participate in his care and remain still while the laser was applied to his lower spine. With dedicated time, patience, positive reinforcement, and a little help from his favorite treat — fig juice — Otis learned to sit still for his treatments. 

The results have been notable. Though age-related changes can’t be reversed, the combination of laser therapy and medication has significantly improved Otis’ mobility, helping him stay more comfortable and active so he can continue to age gracefully. 

From neonatal to an animal’s senior years, the Zoo can provide industry-leading care to animals like Otis due in part to generosity from donors like you. Thank you! 

De Brazza’s monkey Otis receives laser treatment.