Visiting a dog park is great for your pet to get in some much needed exercise, but one dog trainer says he's not a big fan of these places. Ali Hemyari of Nashville K-9 says having strange dogs confined in an area can lead to fights. He adds that dog owners may not notice right away if a fight breaks out because they're usually distracted by their cell phones. But Hemyari has tips on how to break up a conflict if one arises. InsideEdition.com's Mara Montalbano has more.