It's generally best to wait at least 30 minutes to an hour after your dog eats before engaging in vigorous exercise or taking them for a long walk. That is particularly important for larger breeds or dogs prone to certain health conditions such as bloat or gastric torsion. These conditions can be more likely to occur when a dog exercises vigorously or engages in physical activity immediately after eating. Allowing a short rest period after meals helps digestion and reduces the risk of complications. Walking your dog 30 minutes after eating is generally safe, but it's essential to consider the size and breed of your dog and any specific health conditions it may have. Consulting with your veterinarian is always a good idea if you need more time to walk your dog after meals. They can provide guidance based on your dog's individual needs and health factors.