Raccoon and Lobster

Always at the forefront of cutting edge pup identification technology, rockyandarthur blog is featuring the first incontrovertible, irreproachable, authoritative puppy identification device ever devised by man. After years of study based on the known tenets of the science of pup discrimination, scientists have discovered the failsafe identification algorithm, the celery matrix:

Supporting evidence for this world-shattering breakthrough soon to be published in Nature can be seen in the following figures.

Arthur: devours his celery stalk.

Rocky: bites and spits.