"The mountain lion is large and slender and has short, muscular limbs ... The pelage is of medium texture, characteristically short year-round in tropical forms, but growing longer and thicker in the winter in temperate forms. The young are black-spotted in three irregular dorsal lines and transverse rows These spots are vivid up to the animal's third or fourth month of life. The eye color is blue in young kittens and turns greyish brown to golden in adults. The pupils are round."