Service dogs can be any size or shape, however they need to do the job they are assigned. Most guide dogs are medium or large breed so that the harness is easily with in reach. All guide dogs have extensive training and impeccable temperaments. One large school trains for 28 months before assigning the dog to a blind individual.
Jack Russels have several flaws that would make them a poor choice as a guide dog.
Energy level, independence, aggressiveness, protection/aggression issues and their small size.
Due to their size they are not large enough to pull a wheelchair, so their use is limited mainly to diabetic, seizure, hearing and retrieval tyoe tasks. Several customs dogs are Jacks.
the bigest player in the world ----------------------------------------------------------------------------------------- http://www.akc.org/breeds/parson_russell_terrier/index.cfm The Parson Russell terrier is a name change; it was formally the Jack Russell terrier.
Jack Russell terrier also called parson Russell terrier.
The difference bettween a Jack Russell Terrier and a Parson Russell Terrier is the Parson Russell Terrier has Longer legs and therfore is not as stocky as the Jack Russell terrier, but because the Parson Russell Terrier has longer legs it is also a little faster Than the Jack Russell terrier. The Parson is recognised by the Kennel Club, it is a "pedigree dog" with a breed standard. The Jack Russell comes in many shapes and sizes, it is not recognised by the K.C. and has no breed standard. They both can have rough, broken or smooth coats.
Jean Jackson has written: 'The making of the Parson Jack Russell terrier' -- subject(s): History, Jack Russell terrier
There are two different coat types for the Parson Russell terriers, aka. the Jack Russell Terrier. smooth or rough, they don't change as the dog ages, you get what you got.
They are related to parson terriers the parson terrier has a larger chest and a longer head and overall have a bigger body size also the jack russell originates from england, hoped this helped :D
No. They are registered separately under JRT clubs. The AKC recognizes the Parson Russell, which is a kind of "show dog" variation on the working Jack Russell Terrier.
Parson Jack Russell's have longer legs and therefore can run faster
Jack Russel Terrier, or Parson Russel Terrier.
The Jack Russell is a smaller version of a Fox terrrier. A Fox terrier is derived from a wolf. I belive they just kept breeding small-legged Fox terriers until they got the Jack Russell terrier.
He's actually a Jack Russell Terrier because the Wire Fox Terrier's muzzle is too long and skinny, and the Jack Russell's muzzle is shorter.
The Parsons Jack Russell Terrier is an official dog breed so, therefore, a Jack Russell can be a purebred dog.