EveryDoggy

Most puppies take between four and six months to become reliably house trained, though some individual dogs finish sooner and others need closer to a year depending on consistency and breed. Setting a fixed feeding and bathroom schedule tends to speed up the process more than any single training trick.

Clicker training gives a dog a precise, consistent marker for the exact moment it performs the correct behavior, which many trainers find speeds up learning compared to verbal praise that can vary in timing and tone. That said, plenty of dogs learn well with verbal praise alone, so the clicker mainly helps with precision rather than being strictly necessary.

Basic obedience and socialization can start as early as eight weeks old, well before a puppy has completed its full vaccination series, as long as training happens in a controlled, low risk environment. Waiting until a puppy is four to six months old to begin any training at all can make some behaviors, like jumping or nipping, harder to unlearn later.

Adult dogs can absolutely learn new behaviors and unlearn old habits, since dogs continue to respond to consistent reinforcement throughout their lives, not just during puppyhood. Progress with an older dog often takes longer than with a puppy since an established habit has had more time to become the dog's default response.

An app can effectively teach most standard obedience skills and address common behavior issues for owners willing to follow a consistent daily routine. A dog with severe aggression, extreme anxiety or a complex behavioral history generally still benefits more from an in person certified trainer or veterinary behaviorist who can observe the dog directly.