Subscribe to The Pet Collective: Facebook: Twitter: Pinterest: Google+: gplus.tothepetcollectivebr br Top Five Facts about Jack Russell'sbr 1) Jack Russell's were originally bred as hunting dogs- specifically to hunt foxes. br 2) The breed is thought to have originated from dogs owned by Reverend John Russell in the early 19th century.br 3) Jack Russell's have a lot of energy and need to be exercised enough to keep them happy. br 4) Jack Russell Terriers are considered to be one of the most intelligent breeds.br 5) Jack Russell's aren't great with small children under the age of six.br br For more information, visit www.castlereighkennels.