O.k., picture this...The baby goes and sits down next to the dog. She is chewing on a bone and part of it has fallen down on the ground. The baby picks up that part and puts it in his mouth...and here's where we'll begin...
Mom: (freaking out) Get that bone out of your mouth right now!
Both the baby and the dog drop the bone.
Mom: (to the dog) No, no...it's o.k. you can chew on it.
Both pick up the bone and put it in their mouth.
Mom: (again, freaking) Ahhh, icky! Get that bone out of your mouth!
Both drop the bone. The one with the tail is getting confused.
Mom: (to the dog) It's o.k., you can chew on it. Just go chew on it somewhere else.
Both pick up the bone and put it in their mouth and race to another location...the same location.
Mom: (badly freaking out and racing to the location) Get that bone out of your mouth!
Both drop the bone. The one with the tail gives up thoroughly confused...the baby races away
Moral of the story: Never give a dog a bone with a teething toddler ANYWHERE in the remote vicinity...confusion will only follow