The viva-voce examination on the M. Phil thesis entitled ASSESSMENT OF ENVIRONMENTAL CONDITIONS AND MENTAL HEALTH OF CAT OWNERS AND VARIOUS SURGICAL METHODS FOR THE STERILIZATION OF THEIR CAT was defended by Md. Niyamat Ullah held on May 25, 2025 at 3:00 pm at the office of Director, Institute of Environmental Science, University of Rajshahi, Rajshahi-6206, Bangladesh. Principal Supervisor Professor Dr. Md. Jalal Uddin Sarder Department of Veterinary & Animal Sciences University of Rajshahi, Co-Supervisor Professor Dr. Md. (1) Professor Dr. Md. Abul Kalam Azad Institute of Environmental Science University of Rajshahi (2) Professor Dr. Md. Royhan Gofur Department of Veterinary & Animal Sciences University of Rajshahi.