Final answer:
The muntjac is a small deer native to southeastern Asia that makes a sound similar to a dog's bark. It is known as the barking deer because of its unique vocalizations.
Step-by-step explanation:
The muntjac is a small deer native to southeastern Asia that makes a sound similar to a dog's bark. The muntjac, also known as the barking deer, is known for its vocalizations, which can be mistaken for the bark of a dog. This unique vocalization is used as a warning signal to communicate with other members of its species and to ward off potential threats.