They Focus On One Dog when you take them to the park, daycare, or on playdates with other dogs, you notice they gravitate towards one or two specific dogs, possibly ignoring all other dogs present. If both dogs’ body language is positive and inviting, and they initiate play, you can be sure this is a healthy relationship, your pup most certainly has a best friend, especially true if it’s ALWAYS the same dog. They’re Comfortable the number one way to confirm that your dog is comfortable is by watching their body language. If your dog is having a positive experience, they will almost always maintain positive body language around another dog. Positive body language includes long and high, side-to-side tail wagging, play bowing, a loose opened mouth, a low, relaxed tail, or soft or squinted eyes. They Share dogs typically aren’t great at the whole sharing thing, if your dog actively shares with another dog, you can be sure that the two pups are VERY fond of one another.