Older dogs vs puppies. Time is another consideration when deciding on the best fit for a new family member. How much time do you have to invest in training your new canine companion? Puppies require a lot of patience and work to potty train as well as to teach them basic obedience and manners. Adopting an older dog may require less substantial time commitments when helping them to adjust and trust their new surroundings and owners. Puppies are great bundles of energy, but that can backfire if that’s not exactly what you want.