GREENSBORO, N.C.-- The Greensboro Science Center (GSC) is mourning the loss of one of its tigers. Friday, GSC confirmed 13-year-old male tiger, Axl passed away.

The tiger's death comes a year after its sister Kisa, who died in July of 2016, according to the GSC.

For nearly a year, the science center said a dedicated team of keepers, curators, a vet technician, and a veterinarian monitored and treated Axl's age-related decline and in the end, no level of staff attention, continuous care and monitoring could turn back the hands of time.

Glenn Dobrogosz, CEO of the Greensboro Science Center, says, "Both Axl and Kisa were instrumental in teaching over 3.1 million visitors about the plight of endangered tigers in the wild. They will be greatly missed."

The tiger exhibit will remain closed for several months, the Greensboro Science Center said. The exhibit and back of house living quarters will be upfitted and modified to prepare for GSC involvement with Association of Zoos & Aquariums' Malayan Tiger Species Survival Plan (SSP) breeding program.