This struggle dates back as far as time itself. An enduring story of intellect against brawn, of an underdog (and we take this somewhat literally, given as there is a dog under a table in this picture) overcoming the odds. The only issue with this photo is that, had the dog stood for David instead of Goliath, it would have been really suitable. He would thus definitely be the underdog.
We're not sure if that cat is just incredibly small or if that dog is a gigantic one, hence this image also shows how much contrast shapes our sense of size. The scenario brilliantly captures the traditional relationship between dogs and cats, where attitude usually takes front stage above size. Watching a confident cat stand its ground against a far bigger canine friend is universally funny despite the obvious physical difference. The comedy resides not only in the size difference but also in the manner these interactions usually play out: the smaller feline often emerges as the psychological victor, demonstrating that in the animal kingdom, as in life, confidence and attitude can sometimes outweigh absolute physical advantages. This contemporary David and Goliath scenario gains even more comedy from the way the big dog tentatively approaches the situation, perhaps mindful of prior events where size didn't always guarantee success.