BOXBORO, Mass. -- An 8-month-old puppy is recovering from surgery after eating eight golf balls.

Wally's owners said the Rottweiler pup started acting weird last week. He eventually threw up three golf balls, including one that was wrapped in a sock.

But when the dog still was acting strange, Wally's owners took him to the Boxboro Animal Clinic.

"Lo and behold, there was another five golf balls sitting in there," Veterinarian Stewart Bleck said.

Wally underwent surgery to have the other five balls removed.

Wally's owner Julianne Bonfilio said some friends like to putt around golf balls at their home, but they never noticed that the balls were disappearing.

Bleck estimated that the balls had been in the dog's system for about a week.