A close-up view of a senior black dog's nose as it sleeps on the floor at home

dog nose detailed closeup nose dog elderly dog sleeping senior sleeping dog love for pet tired pet laying floor aged signs gray hair sign of aging series domestic animals lying down mammal napping pets relaxation resting sleeping senior animal closeup cute canine best friend labrador black labrador retriever black retriever lie down laying down elderly animal senior pet cuteness old pet old doggy old labrador black doggy closeup view close up angle headshot sleepy eyes tired relaxed age signs narrow focus stroke care animal mouth detailed focus detail face