8. They’re Curious and Engaged

A happy dog tends to explore their surroundings with confidence. You’ll notice them sniffing, watching birds, or checking out new paths during walks. Frontiers in Psychology notes that positive emotions in dogs are often expressed through curiosity and open exploration. A curious dog feels secure enough to interact with the world. They aren’t shut down or fearful. Dr. Bekoff says curiosity in dogs is a good sign of emotional resilience. Happy dogs are more likely to check out new toys or interact with unfamiliar people in a relaxed way. If your dog enjoys discovering new things, they’re showing mental engagement and a stable mood. That eagerness to investigate is one of the clearest signs of a well-adjusted, joyful pup.