Litter Size: 4-8

Jack Russell Terriers are considered an intelligent, high-energy breed. Despite their high-energy, they are often considered one of the smartest dog breeds in the world, thus their common appearance in television and movies. Their compact size, friendly and inquisitive nature, and intelligence make them popular as pets. Built for speed and strength, they will always be ready to play. However, they require consistent training and a good deal of attention and exercise to maintain their temperament and to occupy their minds.
A Jack that stands 12 inches high can easily jump five feet. JRTs are not the breed for a inexperienced dog owner.
Jack Russells who are not trained on a consistent basis, or are not exercised regularly, may occasionally exhibit aggressive or unmanageable behaviour, including excessive barking, escaping from the yard, or digging in unwanted places inside and outside the house. In America, several Jack Russell rescue networks have to work constantly to find temporary and permanent homes for JRTs whose owners could not meet these requirements for keeping JRTs as house pets. Prospective Jack Russell Terrier owners are advised to do their homework.
This is a BIG dog in a little dogs body.
All Russells are small terriers The Parson Russell Terrier is not a Jack Russell Terrier -- it is a breed created by the American Kennel Club by narrowing the Jack Russell standard to include only the larger dogs.
Recognition - FCI, UKC, KCGB, NZKC, CET, ANKC, IKC, CKC, NKC, APRI, ACR