little beggar

courtesy national galleries of scotland

Here's "Olaf the Dog Begging," by William Bell Scott (Scottish, 1811-1890), dated 1862.  A friend of Dante Gabriel Rossetti, who was also no slouch at a winsome pet sketch, Scott wrote intimate accounts of Rossetti's Pre-Raphaelite circle.  Known for his landscapes and history paintings, Scott also added industrial themes to his work, one of the first British artists to do so. 
And then he took time out one day to dash off a beady-eyed supplication from his best friend.

Credit line: Purchased 1950.  Link to object webpage here.