Border colli 9 month is not interested in his food?

If your 9-month-old Border Collie is showing a lack of interest in food, it could be due to various factors such as stress, changes in routine, or health issues. Ensure that the food is fresh and appropriate for his age and activity level. If the behavior persists for more than a day or two, or if he shows any signs of illness, it's best to consult your veterinarian to rule out any underlying health concerns. Engaging him in play or trying different food types may also help rekindle his appetite.