- Back whorl of Phu Quoc dog: using the word “whorl” here is not absolutly exact because Phu Quoc dogs’ back whorls don’t have round shape but it is a line  (sometimes sinuous) on backbone beginning at shoulder to the end of bottom bone (excluding tail). The whorl’s width is about 1-2cm. The hair  within whorl area is harder and longer. The whorl usually forms a beautiful decoration.

- Hair of Phu Quoc dogs: genuine Phu Quoc dogs have silky hair and is close to their skin. They just shudder and slightly wag their body when coming back from water, their body will immediately be dry.

The dog hair color is commonly auburn (like alum color) well-matching the red color of soil, which is conveniently a disguisement when going hunting or hiding.

Feet of Phu Quoc dogs: the hair on feet of dog is  normally gathered because of close position of four separate toes. However, Phu Quoc dogs have webbed-feet like duck’s feet. Phu Quoc dog’s toes lie a bit farther than that of normal dogs. When they swim in water, their toes stretch like an oar pushing the whole body forward.

The dog’s race maintenance: when nearing their due day, the mother dog goes to the forest to dig a hole and to take care of themselves. When the puppy is strong enough, the mother takes her babies home. If a flock consists of 10 puppies, there will be 6-7 ones with “wearing” claw ( good hunting dogs).

Phu Quoc dogs have big snout, long and proportioned body and legs, straight tail, large chest and slim belly. They can run as fast as a squirrel or swim well like an otter. Besides, they can hear and understand human language.

 While going hunting, the dog is, in case, watching for the quarry. People can’t shout out then, they just jerk up their chin and pointing at the quarry. The dog, at once, rush into the quarry.