Which key development occurred in the Utah POST K9 program in 1989?

The key development that occurred in the Utah POST K9 program in 1989 was the initiation of the program based on zoology, ethology, and cynology. This foundational shift emphasized the importance of understanding animal behavior and the biological principles that govern it, which are crucial when training police K9s for various tasks, including scent detection and apprehension. By incorporating concepts from these scientific disciplines, trainers could design programs that better align with how dogs learn and interact with their environment.

This focus has likely improved training methods and outcomes by ensuring that the techniques used are grounded in a solid understanding of canine behavior and physiology. Effectively leveraging knowledge from zoology, ethology, and cynology allows trainers to maximize a dog's potential, tailoring training in a way that is both humane and efficient.

The other developments mentioned may not reflect significant changes specifically linked to the recognized milestones of the Utah POST K9 program during that time.