A: My personal preference is not to use food at all. When I have trained dogs for obedience, I have always used the verbal praise-reward method. It works well, especially with some dogs who are not motivated by food rewards.
Many people do use treat-based training with success, but I don't recommend offering table scraps as the treat. Giving a dog people food—in training or just as a general reward—may give the dog the idea that such food is fair game. It might encourage your pet to steal food from the table or from people, especially kids or guests.
In addition, many human foods can be toxic to dogs. These include chocolate, grapes, raisins, macadamia nuts, and xylitol (a sweetener often used in gum, candy, and baked goods).
As an alternative to table scraps, you could train your dog with snacks that are tasty, low in fat, and commercially prepared for training. But keep in mind that soft chew snacks may be high in sugar, which is bad for dental health. When shopping for treats, read package labels and choose premium varieties that list meat as the first ingredient.
Use only small amounts for training purposes—treats should not interfere with the consistency of a normal diet or greatly affect the caloric intake for the size and age of the dog. The training sessions should be short in length and repeated several times throughout the day. For young dogs, the training period should be no longer than five minutes.
Finally, the most important training tip is to keep it positive. If you're getting frustrated with your puppy's naturally short attention span, take a break. Strive to end the session on a positive note so your pet will be eager for the next time.
Janet Tobiassen, DVM, a veterinarian based in the state of Washington, has been practicing and writing about vet medicine since 1999. She started training dogs at age 12, through 4-H, and continued pet therapy and obedience training in veterinary school and beyond.

Puppies grow quickly and have special nutritional needs to keep their bodies strong. The most noticeable time is known as the rapid growth stage, which occurs between 2 and 6 months of age. From about 3 to 6 months, most pups will lose their puppy teeth (you might find a tooth near his dish or on the floor; this is normal).
During this phase, his mouth and gums may be very sensitive, which could cause him to be a bit picky when it comes to eating. There's nothing you can do except to wait it out, even if his appetite is low for a couple of days.
Helpful Hints
Don't switch to a new formula to stimulate your puppy's appetite. Changing food at this time can cause additional stress and intestinal upset. The tips below could help your puppy make the change: