The video shows a large, brown dog running around in a backyard. The dog is seen running through the mud, jumping over a small puddle of water, and walking around the yard. The dog appears to be happy and energetic, enjoying its time outside. The backyard is surrounded by a wooden fence and there are some trees and bushes visible in the background. The ground is mostly muddy with patches of grass. The dog's coat is shiny and well-groomed, and it has a long tail that wags as it moves around.