Human beings gestures and words are enough to state that the person needs food.
But what if it is animal! Animals do not have the ability to speak, but their unique behaviors are such that they are compared to human in many instances. Though you may not feel pity when a person begs for food sighting many reasons, but these wonderful and innocent faces will compel you to give them some amount from your food stuff.
Their joined paw does the trick of begging food and won’t leave you till a morsel is given to taste.
https://www.youtube.com/watch?v=GNaAYKV5mIM