Initially Observed Some Important Morphological Characteristics on Phu Quoc Ridgeback Dogs (Canis familiaris) in Vietnam

Phu Quoc Ridgeback dogs (Canis familiaris) were one of the endemic species of Phu Quoc Island Vietnam, This animal is one of the rarest dog in the world, which has a ridgeback. Currently, Phu Quoc dogs have not been put into separate group and they are classified in the Thai Ridgeback group (according to FCI - Fdration Cynologique Internationale). The mainly reason is not studies which showing differences in phenotype and genotype of Phu Quoc dogs to other breeds. This study was carried out in a few research papers about the phenotype and genotype of Phu Quoc dogs that was taken in Viet Nam previous. The 29 Phu Quoc dogs (18 36 yrs) were initially observed in shape, color and measure the phenotypic characteristics. The data obtained through statistical processing by t-test and regression correlation. Results showed Phu Quoc dogs have important properties such as nails weared and webbed feet on all dogs observed, most of them have black tongue spotted, dominant color is yellow and black, the other colors appear on a few individual dog which are weak expression and not responsive health of the flock, this could be the recessive mutation unexpected survival, mainly curved tail upstream 2/4 - 3/4 circle, function correlation between growth indicators basic size is y = 0, 03. x1, 68 (body weight and height), y = 0, 02. x1, 64 (body weight and chest size), y = 0, 03. x1, 64 (body weight and waist circumference).