Morphological characteristics of Python
Boa constrictors are 3-5 meters long. There is a dark brown spear shaped spot on the back of the head and neck, and a black longitudinal spot on the side of the head, which starts from the nostril and slants to the corner of the mouth through the anterior scales and eyes. At present, there is also a black line slanting backward to the lip margin. The scales on the lower lip are slightly dark brown. The abdomen of the head is yellowish white, and the back of the body is brown, grayish brown or yellow. There are large clouded leopard like markings with black edges on the back and both sides of the body, and the abdomen is yellowish white.
The head is small, the snout tip is flat, the snout scale is wider than the height, the back is visible, the nostrils are located on both sides of the nasal scale, and the length of the nasal scale is less than 1.5 times of the width; A pair of larger forehead scales followed; Frontal scales in pairs; The eye is equal in size, the pupil is erect and oval; Anterior scales 2,; Supraocular scale 1, larger; Posterior scales 3 or 4; 1; The scales of the head and temporal part were small; There are 11-13 upper lip scales, and the first and second upper lip scales have labial fossa; The neck is 54-64 rows, the middle 64-72 rows, and the anterior anus 40-44 rows; Abdominal scales narrow, 255-263 pieces; The anal scale was intact; There are claw like hind limbs on both sides of anal foramen, 63-71 pairs of scales under the tail.
