The prettiest dog in all breeds
Playfulness: Dog's playfulness depends on activity levels and health conditions. Naturally, Golden Retriever dog is extremely high playful breed and they have high activity level.
Some dog breeds have different signs and alerts when they want to play. But, probably the easiest dog body language to understand is a happy dog and want to play: Tail up, relax body, pupils dilated, mouth open (optional), tongue exposed and front-end lowered.