Why does a Los Gatos dog repeatedly scratch at his bed?

Why does a Los Gatos dog repeatedly scratch at his bed?

DEAR JOAN: I have two puppies, half Havanese and half poodle, from the same breeder but different litters. The male is predominately poodle, is almost 2 years old, and weighs under 15 pounds. He regularly and constantly scratches his doggie bed and anything else he can scratch. He is more high strung and seems to be my protector. Their doggie beds are regularly under attack. Would you have any suggestions? — Sidney Mygatt, Los Gatos DEAR SIDNEY:…