Carsickness is only one of the problems for dogs riding in a car. Some dogs leap all over the car, some create noise that impairs safe driving. Aggression toward people through car windows is dangerous. In most cases, transporting your dog in a car can be done safely and sanely if you take some basic precautions.
Guarding food or toys from other animals is a normal canine behavior. Life with dogs in our homes is safer when dogs do not guard their food.
Puppies bite. This is not a form of aggression, but a form of play and communication. It’s important to train a puppy not to bite in play or to communicate, as this behavior can become unacceptable and even dangerous in an adult dog. This is a very important lesson for a puppy to learn.