Creatures tentatively identified as dogs have been reported from this part of Vietnam. But they are not ordinary dogs. Their coats are spotted white or black and white or striped yellow. Their bodies seem unusually long. In sum, they cannot be really identified. They will attack animals as large as horses and, should you seek to prevent their attack on your animal, they will attack you. Their true identity remains a mystery. They may not even be dogs at all.
Vietnam has at least four distinct dog breeds, but none corresponds to the description of these animals.