Q: We recently adopted Tucker, a young, neutered, mixed-breed dog. We don’t know how he behaves around children, because our kids are adults and we’ve remained distanced from our neighbors. As soon as the pandemic is over, our grandchildren will visit. What can we do to prevent Tucker from biting one of them? A: Start by taking Tucker to a group training class that uses treats, praise, and other rewards to positively shape behavior. Socialize him with other dogs, adults, and children who know dogs, and familiarize him with unusual noises and places. Dogs that are well socialized and trained are much less likely to become aggressive. Most bite victims are children, usually boys between the ages of 5 and 9, who are provoking dogs they know. The most common injury sites are the face, neck, and head. When your grandchildren are with Tucker, supervise them at all times. Make …