What are the common causes of freckles on dogs and how can they be managed or treated?

Common causes of freckles on dogs include genetics, sun exposure, and age. Freckles, also known as solar lentigines, are usually harmless but should be monitored for changes in size or color. To manage or treat freckles on dogs, limit sun exposure, use pet-safe sunscreen, and consult a veterinarian for any concerns.