Those puppies need their series of puppy shots and fecals, then their rabies shot, then a trip to be altered, maybe an emergency trip or two if they've chewed something dangerous. Your donation to the rescue when adopting an older pup should get you a dog with all shots current, already altered, heartworm negative and on preventative at the minimum. When adopting an older dog from a rescue, all of those questions are easily answered. The rescue and its foster homes can guide you to pick the right match. When the puppy isn't teething on your possessions, he will be teething on your children and yourself.
Rescues routinely get calls from panicked parents who are sure their dog is biting the children.
Matchmaker Make Me a Match Puppy love is often no more than an attachment to a look or a color. Good rescues do extensive evaluating of both their dogs and their applicants to be sure that both dog and family will be happy with each other until death do them part. Those who have lost their families through death, divorce or lifestyle change go through a terrible mourning process. But, once attached to a new loving family, they seem to want to please as much as possible to make sure they are never homeless again. Those dogs that are just learning about the good life and good people seem to bond even deeper.