Barking dog standing on wood stump. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3296612/free-photo-image-dog-golden-retriever-animalFree Image from public domain licenseThe dog barking on a rock among the misty Scottish Highlands, Scotland https://www.rawpixel.com/image/543454/free-photo-image-dog-barking-winterView license