I'm interested in a shelter puppy who is already 8 months old. I don't know anything about his history but he is described as "mellow yet playful, eager for your attention". I've been doing research on adopting from rescues and shelters and keep reading there is a very short window in early puppyhood when socializing is crucial. If this puppy wasn't properly socialized before 4 months old is it a bad idea to adopt him? Especially with 2 young (5 & 7) children in the house? Are there things I should look for upon meeting the puppy? Red flags? Things I should do with the puppy to "test" his temperament? Any tips and advice on adopting an older puppy with no history is much appreciated!