The Brief Axhi, a 31-year-old brown bear at Brookfield Zoo Chicago, was humanely euthanized after his health declined due to age-related conditions. The zoo remembered Axhi as a beloved ambassador and source of inspiration, cherished by staff, volunteers, and visitors for nearly three decades. Brookfield Zoo Chicago announced that the nearly 31-year-old brown bear Axhi, who first came to the zoo in 1995, has died. In 1995, Brookfield Zoo Chicago and its partners rescued him. Image 1 of 10 ▼ Axhi (Brookfield Zoo Chicago)Each winter, Axhi built cozy dens with sticks and wood wool.