Pet Memorial Stone Grave Marker with Heart 5-6 Inch. This River stone is about 5-6 inches wide. I will customize a similar river rock for your pet memorial. A heart with the name of your pet. A perfect stone for a dog memorial or cat memorial or any pet. Hamster, gerbil, cockatiel, parakeet, parrot, turtle, fish, rabbit and more. Just leave me the name of your pet in the Comments Section during checkout.