Jack Russell Terrier
The Jack Russell Terrier originated in England in the 1800ís due to the efforts of the Reverend John Russell. He developed a strain of Fox Terriers to suit his needs for a dog to run with his foxhounds and go to ground to bolt the fox and other quarry from their dens. Two varieties evolved with basically similar Standards except for differences, mainly in height and proportions. The taller, more squarely built dog is now known as the Parson Russell Terrier and the shorter, slightly longer proportioned dog, is known as the Jack Russell Terrier.
The temperament of the Jack Russell Terrier is not to everyone's taste. They are very energetic and intelligent which can make them quite wilful at times, although they are a very loving dogs and definitely a people dog, they have alot of humor about them and each one is as individual as can be. The Jack Russell Terrier has a strong hunting instinct yet this instinct is controllable if you are willing to teach your Jack Russell basic obedience from an early age. If you are not into energetic and cheeky dogs then a JRT will not be for you.
The Jack Russell Terrier stands between 10 inches - 12 inches tall at the withers, they are slightly longer than tall in the body giving them a rectangular look and should when in lithe working condition weigh no more than 6kg.
Jack Russell Terriers come in 3 main colours of tan/white, tri colour which is a combination of black/tan/white and black/white, occasionally you may also get pure whites which are acceptable. White must predominate at all times, you do not get solid tans, blacks, brindles or black/tans in the pure bred Jack Russell Terrier. Three coat varieties are available: smooth coats are a fine coarse coat that fits neatly to the body. Broken coats are the in between coat type and the hair is a trifle longer along the back and often the dog will have a beard and eyebrows or a little on the legs. Rough coats are long all over the body & face.
Many working terriers have to be very sound of mind as well as body. Working terriers are loaned to hunts so they must get along with other dogs and be good at being handled by strangers, with correct training all Jack Russell Terriers are good natured, people orientated dogs. Any dog can be snappy if not brought up correctly, what you have to remember with terriers is that what once may have seemed a game to you when he/she was a puppy swinging off your trouser leg may not seem like a game to you when the terrier becomes an adult. Start as you mean to go on and teach your dog good manners from the beginning and you will have an excellent relationship with your Jack Russell Terrier.
The breed is known to suffer from several eye conditions: Lens luxation, Cataracts, Entropion, Dermoid, Distichiasis, Follicular Conjunctivitis, Ectopic Cilia and also cherry eye.
Puppy Pyoderma can also affect this breed and some dogs suffer from other skin complaints.
Seizures, Kidney, liver and heart conditions have also been found in the breed. As with most drop-ear dogs, ear problems can also be an issue.