What type of coat is tightly curled and often non-shedding?

The story behind the answer

Curly coat is correct because these coats form tight ringlets that trap loose hairs, so they shed very little. Breeds like Poodles, Bichon Frises, and Portuguese Water Dogs have curly, often water-resistant coats that originally helped them stay warm and buoyant during water work.

Contrast that with other types: wiry coats are rough and bristly (common in terriers), double coats have a soft undercoat that sheds seasonally, and wavy coats have loose S-shaped waves with more typical shedding. Remember: “C is for Curly—Coiled and Contained hair.” Although often called hypoallergenic, curly-coated