sounds about right. PetMountain.com. I also get Nylabone Dura Chew Bones there...the largest size...when my crew gets them to a size I'm nervous about I pass them on to a friend's smaller dog. Back to the jolly ball....A Yankee Cat's sister has/had an online store which is where I got the first one 5 or 6 years ago (forget the name of the site) It is still in GREAT shape. Not long after, I came across PetMountain.com....they were on sale so I got a second one as well as a 10 incher. Bill pulled the plug out of the 10 and added small stones to it, but didn't get the plug back in tight enough. After 3 years or so Dixie managed to work it out and chewed at the hole left making it bigger so that one went in the garbage. Anyway either a 10 or 14 inch should work for Bo...personally I'd go with the 14, but NOT smaller then 10. As you know and have seen from pictures Dixie LOVES her BIG ball
Each cloud has a silver lineing if only you look for it.