If the blanket is made of safe materials like velvet, cotton, fleece, lamb wool, or terry cloth, your dog will not be harmed. For dogs who want a thick blanket, make sure it's the proper size. Most of these blankets only weigh between 5 and 10 pounds, which is a huge relief! Your pooch will be more comfortable and safest if you select a lightweight blanket or on that weighs no more than 5-6 pounds. When your puppy is using it for the first time, be sure to keep a watch on him or her to see if he or she appreciates it and is genuinely at ease.