Westville, Illinois. Small breeder of JRTCA Jack Russell Terriers. Kennel history, litter announcements, pedigrees and photos. Canis Major strives to produce beautiful and intelligent terriers with joyful temperaments and correct conformation. Our unique combination of some of the oldest bloodlines and most respected breeders in the U.S. and Great Britain have led to our consistent and successful type of which Canis Major terriers are known.