Dog agility competitions are timed events where dogs navigate through a series of obstacles, such as jumps, tunnels, and weave poles. Handlers guide their dogs through the course using verbal commands and body language, aiming for speed and accuracy. These competitions are held at various levels, from local to international, and are popular among dog owners and trainers. Agility training helps improve a dog's physical fitness and mental stimulation, fostering a strong bond between the dog and handler while showcasing the dog's skills and abilities.