Is there a clear distinction between a dog playing and showing aggression?

Yes, there is a clear distinction between a dog playing and showing aggression. When a dog is playing, they typically exhibit relaxed body language, wagging tail, and play bows. Aggression, on the other hand, is characterized by stiff body posture, growling, bared teeth, and other threatening behaviors. It's important to understand these cues to ensure the safety and well-being of both the dog and those around them.