These crochet patterns for dog sweaters will make you smile with delight. If you have a chihuahua or other dog that gets cold easily, then these crochet sweaters are functional. But no matter what size or breed of your dog, they'll look cute when they're all dressed up. Use these sweaters to get attention on their walks, make them feel snuggled when you can't be with them, or take that perfectly adorable pet photo.