"IT'S TOO SMALL!" This article is a stub and is in need of expansion. You can help the Angry Grandpa Wiki by expanding it. Biggun, The Rottweiler owned by Angry grandpa. Biggun was the Rottweiler owned by Angry Grandpa, only shown in a Photo in "THE GREEN FAMILY PHOTO ALBUM" posted by Kimberly Pratt. Retrieved from "https://angrygrandpa.fandom.com/wiki/Biggun?oldid=23326" Categories: Article stubs Pets Animals Mentionables Community content is available under CC-BY-SA unless otherwise noted.