Our black Dood has curly fur and her fur didn't change much, just grew longer. Our wavy haired Dood was different. At about 16 weeks he started shedding like mad - he was blowing his puppy fluff. Throughout that time a longer and courser fur started growing in - his adult coat. With Sunny, the longer hair started at the top of his back and 'spread' down his sides until he was covered in the longer fur. By about a year old he was reliably shed-free, and his hair continued to grow in length.