The Jack Russell Terrier Kelpie mix is a muscular and athletic dog with a thick black, tan, or white coat, long tail, and fox-like face. This Jack Russell mix is one of the most energetic of all the crosses, with a strong desire to be worked. Alert and intelligent animals, they have a very intense prey drive.

Jack Russell Terriers have been known to have up to 12 puppies in one litter! And what’s more, when this occurs, your Jack Russell’s childbirth could end up lasting anywhere from 12 up to 24 hours! This is right on par with larger dogs like the Dalmatian, who can routinely yield 10 pups.

Jack Russell Terriers can have up to 12 puppies in a single litter, so prepare for that extreme scenario and get yourself mentally and physically ready for delivering puppies before they arrive.

Jack Russell Terriers do eventually calm down with age, although these dogs are hyper for most their life you should see a chronological decrease in energy levels and movement once they are around nine years old. At this age your Jack Russell will still be active and energetic, but it will be much easier to deal with.

The calmest Doodle mixes are those that were created by crossing Poodles with very laid-back breeds. For example: The Maltipoo – a cross of Miniature or Toy Poodle and Maltese. The Cavapoo: A mix of Cavalier King Charles Spaniel and Mini or Toy Poodle.

• Healthiest Longest Living Dog Breed: Australian Cattle Dog.
• Healthiest Small Dog Breed: Chihuahua.
• Healthy Medium-Sized Dog Breed: Australian Shepherd.
• Healthy Large Dog Breed: Greyhound.
• Healthiest Dog Breed That Doesn’t Shed: Poodle.
• Healthiest Hunting Dog: German Shorthaired Pointer.

The 10 Least Hyper Dog Breeds

• #2 – English Mastiff. Despite their size, the English Mastiff is a gentle giant who wants nothing more than to relax with his people.
• #3 – Shih Tzu.
• #4 – Newfoundland.
• #5 – Cavalier King Charles Spaniel.
• #6 – English Bulldog.
• #7 – Chow Chow.
• #8 – Lhasa Apso.
• #9 – Pekingese.

Not getting enough exercise can cause health problems, such as obesity, but can also lead to behavioural problems. Bored dogs are unhappy dogs – they can show their frustration by chewing, barking a lot, toileting in the house and over-grooming (licking too much).

Most dogs are going to start calming down at around six to nine months of age. By the time they’ve reached full maturity, which is between one and two years of age, all that excessive puppy energy should be a thing of the past!