Dogs naturally love to chase things, but why do they sometimes chase people? One reason is their instinct to chase moving objects—it’s in their nature. They’re also territorial and may bark or chase to protect their space when they feel threatened.

New people bring unfamiliar scents and behaviors, which can make dogs uneasy. Some dogs may even react to things like glasses, hats, or certain voices. Often, they’re just being cautious or protective of their owners.

Dogs can also act aggressively due to past negative experiences with humans. They remember actions and respond based on past trauma.

To prevent unwanted behavior, it’s important to treat dogs well from a young age. Expose them to various sounds, people, and environments. Training and positive reinforcement, like treats for good behavior, can go a long way.

Takeaway: Understanding and training can help dogs feel safe and behave better around others.