Jack Russell terriers are named for the man who first bred them, Reverend John “Jack” Russell. He used them for fox hunting. The mostly white color of the breed is intended to help separate it from the similarly sized foxes it hunts.
After World War II, there was less demand for hunting dogs. Jack Russells became more common as family pets and companion dogs.
There are many well known individual Jack Russell terriers throughout history. A Jack Russell named Nipper became the symbol of the RCA electronics company, based on a painting of the dog looking at a phonograph music player. King Charles of Britain is also famously fond of the breed, having owned several.
The TV series “Wishbone” featured a Jack Russell in the title role. Another famous fictional Jack Russell was Eddie from the sitcom “Frasier”, who was the pet of Frasier Crane’s father Martin.