Its body length about 40 cm, weighs a few kilograms, chunky body, a silver-grey, slightly dark brown spots, big, round mouth, thick lips, blood for the off-white, not hemoglobin.

• 它体长40厘米左右，体重为几公斤，体型短粗，呈银灰色，略带黑褐色斑点，头大，嘴圆，唇厚，血液为灰白色，没有血红蛋白。