The dog see's a reflection of him with the bone and thinks it is another dog with another bone.
The Dog and the Bone is one of Aesop's fables
A patient dog eat the fattest bone
How was the BONE NEEDLE invented?
John Napier invented the Napier's Bone
A dog fetching a bone is a fine example of a treat. (for the dog)
Given the Dog a Bone was created in 1980.
The "dog and bone" is rhyming slang for "phone". Practical application: "Will ya shuddup, I'm on the dog and bone."
Clavicle bone
It means your happy just like a 'dog with a bone' to chew on.
The dog bone is not repairable, simply replace it.
Dog Mud Bone