According to Official Guinness Records,
The most balls caught by a dog with the paws in one minute is 14 and was achieved by Purin and her owner Makoto Kumagai (both Japan) in Sakura, Chiba, Japan, on 22 March 2015. Purin is a 9 year-old female beagle.Read more: Record Holder Profile Video - Purin, the dog who can catch the most balls
For a complete list of 2015 records, please visit 2015 Guinness Records in Japan.