Originally Posted by Chimaera
Even a Bloodhound can't tell the difference between identical twins.
Don't know where u got that from but I saw a document on this. They tested it and the dogs were able to follow the scent of a person without mixing it up with the persons identical twin.
They also tried to make the scent as identical as possible by making the 2 women (identical twins) sleep in the same bed for a night, use the same kind of clothes etc. but they just couldn't fool the dog.
So as far as those test went a dog can tell the difference.