they look just like human bones but smaller
It means your happy just like a 'dog with a bone' to chew on.
A Bone
I do not believe there is a bone in a dog's penis, just like men. My advise would be to check with your veterinarian (or your dog's vet).
Because the expansion joint in cross-section looks like a dog bone.
I wouldn't give the dog a bone like that. It splinters and will harm the dog when he swallows the splintered bone.
I think its shaped like a dog bone.
The dog see's a reflection of him with the bone and thinks it is another dog with another bone.
Its it a bone in your arm!
spongy
The Dog and the Bone is one of Aesop's fables
It looks like a chicken bone
they look like dog terds