If you're worried about your dog's bowel movements even though he's not straining, watch his appetite, activity level, and water consumption. If those things are normal, he's probably all right. Dogs who don't drink enough water. Water consumption is important to monitor. Drinking a lot of water, or a sudden increase in water consumption is a common sign of disease.
Excessive urination is also a warning signal.
But if your dog is eating the same as he usually does, has plenty of water available, and seems healthy otherwise, he is probably getting enough water. That your dog won't like you if you don't give him table scraps or treats, or if you make him do what he is supposed to do. A dog who gets into the habit of getting lots of treats is not going to be happy when you stop, but that doesn't mean he won't like you anymore. And dogs, like humans, feel more comfortable if the rules and limits they must live by are consistently and fairly enforced. Get your dog into the habit of getting ear massages and belly rubs, and spending time sitting on your lap, rather than giving him treats.