Occurred in 2017 / Moora, Western Australia, Australia
Info from Licensor: "My staffy x pup with cerebellar hypoplasia was struggling with the heat during a hot Western Australian summer in the wheatbelt town of Moora. He managed to find a mud pit in the middle of the bush and decided there was nothing else to do in that situation than jump in and have a roll around. He played for a good half hour before we had to leave and then we realized that the only car we had with us was my sister's Prado. So she ended up with 4 dogs in the back of her SUV slightly muddy."