El Paso Zoo saddened by loss of geriatric lion-tailed macaque

The El Paso Zoo regrets to announce the loss of a 32-year-old lion-tailed macaque, Tango. Tango was euthanized late afternoon on Friday, April 17, 2015.

“Tango was a special animal and was very willing to cooperate with us to provide him care for his medical needs. He did things in his own unusual way, which was endearing to those of us that got to work with him. He will be greatly missed,” said Rachel Alvarez, area supervisor.

Tango had a history of severe arthritis but no other serious medical problems. He was observed acting normal the day before. Tango was found on the ground and unconscious with a head wound by keepers on Friday morning. Staff believes that he fell, but is unaware of what caused the fall and whether he was unconscious due to a sudden medical problem before he fell. Even with arthritis, macaques are excellent climbers and rarely fall.

Veterinary staff was immediately notified and Tango was provided intensive care throughout the day. He initially became slightly responsive, but began having complications as the day progressed. Complications included an abnormal heart rate and difficulty breathing. Due to his advanced age and limited mobility, veterinary staff performed euthanasia instead of pursuing more aggressive treatment.

The cause of his fall is unknown at this time. Necropsy reports are pending and may help provide more information about any underlying medical cause.

“Tango was always waiting to greet us every morning. He was one of the prominent animals in the primate building that stood out because of his very nice disposition and willingness to learn new things. We will sorely miss him,” said Kara Loney, senior keeper.

Lion-tailed macaques are listed as “endangered” in the IUCN Red List of Threatened Species and are a part of the AZA Species Survival Plan (SSP) Program.