Two "aggressive" water buffaloes fatally attacked an Oklahoma man before confronting — and delaying — police and firefighters who responded to care for the victim, authorities said Monday.

Jones police responded to an emergency call around 8:35 p.m., with officers arriving to find McMichael trapped by the aggressive animals.

“This wasn’t his first experience handling livestock,” McMichael’s girlfriend Jennifer Green said. “He knew what precautions to take, but livestock are unpredictable and things happen.”