The Jack Russell is a sturdy, tough terrier, very much on its toes all the time. The Jack Russell is a cheerful, merry, devoted and loving dog. It is spirited and obedient, yet absolutely fearless. Careful and amusing, he enjoys games and playing with toys. They are intelligent, and if you let them take an inch, they can become willful and determined to take a mile. He needs to be given rules to follow, and limitations as to what he is and is not allowed to do. Do not let this little dog fall into Small Dog Syndrome, where he believes he is pack leader to all humans. This is where varying degrees of behaviour problems will arise, including, but not limited to guarding, snapping, separation anxiety, and obsessive barking. They are highly trainable and able to perform impressive tricks. The breed was named after a clergyman named Rev. John Russell. It was used as a small game hunting dog particularly for red fox, digging the quarry out of its den in the mid-1800s.
If never spayed or neutered, a female dog, her mate, and their puppies could produce over 66,000 dogs in 6 years!
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