Jobe, M. (2017, March 26). 40 Terribly Interesting Facts About Pit Bulls. Retrieved December 10, 2017, from https://terriblyterrier.com/interesting-facts-about-pit-bulls/
FitBark. (2017, November 15). Retrieved December 10, 2017, from https://www.fitbark.com/
IFetch Pet Toy - Automatic Ball Launcher. (n.d.). Retrieved December 10, 2017, from https://goifetch.com/
IFetch Pet Toy - Automatic Ball Launcher. (n.d.). Retrieved December 10, 2017, from https://goifetch.com/
No More Woof. (n.d.). Retrieved December 10, 2017, from http://www.nomorewoof.com/
Petcube Wi-Fi Pet Cameras - Monitor & Interact with Pets Remotely. (n.d.). Retrieved December 10, 2017, from https://petcube.com/
Stratton, R. F. (1991). The Truth About the American Pit Bull Terrier. Neptune City, NJ: T.F.H.