You could hide him in your fist, but I wouldn't try it. He belongs to the Queen of England, whose great-grandmother Alexandra bought him in 1910.
He's pretty busy chewing some golden grass, though, so maybe he wouldn't notice if you gave him a cuddle. He's made of chalcedony (a semiprecious stone), has platinum whiskers, and sapphire eyes.
He's a Faberge dormouse. And he is cute.
The jeweler Carl Faberge made quite a number of delectable semiprecious critters for the Royal Family in the few years to either side of 1910. There's a great figurine of Edward VII's much beloved terrier Caesar, and some stories about the dog himself. There's a Border terrier, a cat, a .... snail?