Why do some animals have fur or feathers?

Fur and feathers are crucial for thermoregulation and protection in many animals. Fur, found in mammals, acts as insulation, helping to keep animals warm in cold environments. It also protects them from the sun and environmental elements. Feathers in birds serve similar functions, providing insulation and helping birds maintain body temperature. Feathers also assist with flight, camouflage, and mating displays. Both fur and feathers provide a way for animals to adapt to their specific environments, improving their chances of survival.