This is Charlie and he's one of the sweetest little dogs I've met. He's a Griffon Bruxellois or Brussels Griffon which is a breed of toy dog, named for their city of origin: Brussels, Belgium. The Griffon Bruxellois may refer to three different breeds, the Griffon Bruxellois, the Griffon Belge and the Petit Brabançon. Identical in standard except for coat and colour differences, in some standards they are considered varieties of the same breed. You can see two of them HERE - photographed at the Monaco Dog Show. Sometimes they are called 'monkey dogs' presumably because of their cute expressions.
The little wire-haired dog in the foreground of the Jan van Eyck painting The Arnolfini Marriage is thought to be an early form of this breed.
Charlie is 10 years old, although you'd never know it and he lives in Monaco. Absolutely adorable.