Jack Russell Terrier Dog

Facts about Jack Russell Terrier Dogs, "Scientific name for Jack Russell Terrier Dog, or domestic canine, is Canis lupus familiaris". The Jack Russell Terrier Dog was named after Rev. John Russell who was then a clergy man. The dog was used as a game hunting dog for the Red fox in the 1800s. The hunters’ needs for a long-legged hunting breed led to the cross of the breeds to a wider range of the breeds with great working ability which included, tracking, hunting, performing tricks and agility.

Jack Russell Terrier Dogs sweat glands are between their paw pads.
It is a Fact a Jack Russell Terrier Dog sees in color and have better low light vision. Jack Russell Terrier Dogs have three eyelids, a lower lid, an upper eyelid lid and a third lid, that is called a haw or nictitating membrane, this keeps the dogs eye protected and moist. Jack Russell Terrier Dogs eyes have a special membrane for seeing better at night, called a tapetum lucidum - a dogs reflective layer in the choroid chiefly of nocturnal, causing the eyes to glow when light at night hits the eyes and they consist of some layers of smooth flat cells covered by a section of double deformed crystals.


The Jack Russell Terrier Dog is a tough terrier, sturdy dog, always on its toes. It can grow with an equal proportion of its height to length. The average height of the Jack Russell Terrier Dog is 10 to 15 inches (25 to 38 cm) and the average height is 14 to 18 pounds (6 to 8 kg). Jack Russell Terrier Dog has a balanced, compact, well masculine body which can remain solid in very hard conditions. Its shoulder is laid back, slopes and clearly cuts at the withers. The Jack Russell Terrier Dogs skull is flat with a moderate width around the ears and narrowing towards the eyes. Its stop is well defined and has a black nose with a relatively shorter muzzle.

A Jack Russell Terrier Dog’s mouth can apply approximately 150 to 200 pounds of pressure per square inch and an American Pit Bull Terrier, German Shepherd Dog and a rottweiler can have 320 LBS of pressure on avg.
All dogs are identical in makeup big or small– 42 permanent teeth and 321 bones. Jack Russell Terrier Puppies have 28 teeth and when they become adult Jack Russell Terrier Dogs they have 42 teeth. When Jack Russell Terrier puppies are born, they have no teeth and are deaf and blind. Jack Russell Terrier Puppies for their first few weeks will sleep ninety percent of the day and their vision is not fully developed until after the first month.

The Jack Russell Terrier Dog has dark-colored eyes which are almond-shaped. It has mall ears too which are v-shaped. Its ears are relatively thick and carried forward above its head. Jack Russell Terrier Dogs neck is slightly long, masculine and gradually widens at its shoulder. The Jack Russell Terrier Dog has strong straight forelegs with its fore legs being slightly apart from each other. It has strong, overlapping teeth with a powerful bite. The tail is about four inches (10 cm) long and proportional to its body. The Jack Russell Terrier Dog's coat can either be rough, broken or smooth with various colors including white, brown markings, black, and tan.

Average body temperature for a Jack Russell Terrier Dog is between 101 to 102.5 degrees
Female Jack Russell Terrier Dogs are in heat for matting for about 20 days twice a year. Female Jack Russell Terrier Dogs are pregnant for 60 days before they’re puppies are born.
A Jack Russell Terrier Dog is an omnivore, (definition-they eat both other animals and plants). All Dogs are direct descendants of wolves.

The Jack Russell Terrier Dog is a happy active, cheerful and an affectionate dog. It is spirited, obedient, careful, amusing and devoted. It enjoys playing and loves games and toys. It is also intelligent and can become determined and willful to take a mile if let free. However, it has an obsessive barking behavior. Jack Russell Terrier Dogs can perform new tricks and can be highly trainable.

Only humans and dogs have prostates and a dog doesn't have an appendix.
Jack Russell Terrier Dog’s nose prints can be used to identify them, their nose prints are like a humans finger print. It is a Fact a Jack Russell Terrier Dog smells more than 1,000 times stronger than that of a human. A Jack Russell Terrier Dog’s nose, secretes a thin layer of mucous that helps it absorb scent, after that they lick their noses and sample the scent through their mouth.

It can be prone to an inherited eye disease, Deafness, Patellar Luxation, Glaucoma, Lens Luxation, dislocation of kneecaps and the disease of the hip.
Jack Russell Terrier Dogs can live up to fifteen years.

Jack Russell Terrier Dogs have two times the amount of ear muscles than people. It is a fact a Jack Russell Terrier Dog can hear a sound at four times the distance of a human. Sound frequency is measured in Hertz (Hz) Def-Hertz is the measurement of frequency, explicitly it's one cycle per second. The higher the Hertz are, the higher the pitched the sound is. Dogs hear best at 45,000 Hz to 65,000 Hz, while humans hear best at around 20 Hz to 20,000 Hz.
When purchasing a Jack Russell Terrier Dog from a breeder, make sure to find a good breeder with references, check at least two to three of the puppies that were purchased from this breeder.
On April first 2003, not agreeing with this broad variety of the working type Jack Russell Terrier dogs, the Jack Russell Terrier Association of America changed the its name to the Parson Russell Terrier Association of America.
Some of the movies you may know the Jack Russell Terrier Dog from is, My Dog Skip (2000), Clean Slate (1994), Ernest Goes to Jail (1990), The Mask (1994) and Hotel for Dogs (2009). Jack Russell Terrier Dogs are good acting dogs and adorable.

Jack Russell Terrier Dogs pant to keep cool with 10 to 35 breaths per minute with an average of 24 breaths per minute. A large dog breed resting heart beats between 60 to 100 times per minute, and a small dog breed’s heart beats on average between 100 to 140 pant a lot.

The number one heath problems amongst Jack Russell Terrier Dogs is obesity, so always make sure your dog doesn't get to fat. Many foot problems that Jack Russell Terrier Dogs have are just an issue of long toenails.