If it is true that...

Puppies need the proper stimuli to develop their genetic potentials

and

Current commercial & hobbyist dog breeders may not adequately provide the proper stimuli to puppies for them to develop their genetic potential

Then it must be true that...

Current dog breeding practices are potentially dangerous on the genetic level

If it is true that...

Puppies need the proper stimuli to develop their genetic potentials

Then it must be true that...

On an environmental level, puppies are heavily influenced by their rearing environment