22 weeks Hair is visible on the head, and fine, downy lanugo covers the body – especially the shoulders, back, ears, and forehead. 23 weeks to birth Melanin starts being produced, adding color ...

She explained that their white fur, known as lanugo, serves as an effective insulator during this critical early stage of life. “That’s a very late-stage pup, but he still has the lanugo on ...