My short haired black cat, Charlie, also has a white patch on his chest. He has been missing since October 16th 2025 last location was our house in Lafayette New York. He had a blue grayish with white clip flea and tick collar. When he sleeps with his mouth closed a tiny portion of his canine stick out peak out making the appearance of fangs. He is not chipped unfortunately he has been neutered and had his shots. He is skittish around strangers.