Indoor puppy socials are a crucial component of a well thought out socialization plan, forming the cornerstone of all future social abilities. They also have the advantage of being available before all vaccinations are complete, as early as nine weeks of age. I recommend at least ten socials by 18 weeks of age.
Dogs pull on-leash because they are faster than us and because of the opposition reflex, an innate pushing or pulling against physical pressure. Properly introduced and used, head collars can help tremendously with leash pulling and in some cases, leash reactivity.
With a targeted, science-based plan, canine behavior issues can be addressed, managed or mitigated and, frequently, entirely solved. The not-so-good news about dog behavior modification is that there are no guarantees, just as there are none for human behavior problems.
Some sibling puppies raised in the same household develop behavioral problems because their deep bond impedes comprehension of human and canine social cues, interfering with social development and communication skills.
A University of Denmark study of over 15,000 dogs from 164 breeds shows that it is impossible to generalize about canine temperament based on breed alone. The researchers demonstrated conclusively that there is a very high degree of behavior variation within each dog breed.