If you choose to feed them before a walk, wait 30 minutes before taking them on a walk. If you decide to feed them after a walk, wait 30 minutes after the walk before feeding them. Is There a Best Time to Feed Them? Now that you know it doesnt really matter if you feed your dog 30 minutes before a walk or 30 minutes after a walk, the next question you might have is whether or not there is a good time of the day to feed them.