My husbands mom and dad's dog is 10 pounds overweight. She is a springer spaniel about 9 years old. The problem is his dad is feeding the dog treats and table scraps everyday. The family knows the dog is overweight and is even on a special dog food for weight. It seems like they (especially the dad) don't understand how serious this issue is. How do you think we can get them all on the same page and help the dog out?