At only 6 months old, I’m thinking he will outgrow this way of getting attention. We had an Aussie Cattle Dog, loved everyone, & never bit anyone. But if there were kids over swimming, every time one would get out and run around the pool or head for the diving board, Rascal would nip at their heels. Only once did he actually leave a mark, one boy had a bruised heel. I just chalked it up to his herding instincts.