On June 15, 2025, the Chiang Mai Zoo's official Facebook page released a statement regarding the recent illness and passing of its female Indian rhinoceros named "Kali." The zoo reported that on the morning of June 2, 2025, staff discovered Kali lying motionless inside her exhibit area. Upon inspection, she was confirmed deceased, and the incident was promptly reported to supervisors.
Kali had long suffered from reproductive issues, particularly intermittent vaginal discharge. This symptom was first observed in October 2012 and was attributed to reproductive system disorders common in older, never-bred female Indian rhinos. Such conditions often involve uterine tumors.
Veterinarians diagnosed and treated Kali using antibiotics mixed with her food to control infections. They also collected fluid samples for lab testing, maintained a consistent health monitoring regimen, and provided a tailored diet with vitamin supplements appropriate for an aging rhino.
Upon her death, the Zoological Park Organization of Thailand dispatched a team from the Wildlife Conservation and Research Institute to conduct a preliminary necropsy alongside Chiang Mai Zoo’s veterinary team. A total of 15 personnel, including vets, vet assistants, and animal care staff, participated.
The initial findings revealed that Kali died from severe uterine inflammation and a large uterine tumor, conditions for which she had been under consistent treatment. Tissue samples have been sent to the Faculty of Veterinary Medicine at Chiang Mai University for further histopathological examination.