A to Z of Jack Russell terriers

• High Energy: Need 1+ hour of exercise daily; love running, jumping, and outdoor adventures.
• Attention Seekers: Don’t like being left alone; can become destructive or yappy if bored.

• Bold & Fearless: Naturally confident, assertive, and determined, stemming from their hunting background.
• Big Barkers: Can be vocal and prone to excessive barking if not trained.
• Boredom: Need mental stimulation to prevent bad habits like digging or chewing.

• Coat Types: Smooth, rough, or broken (wire-haired).
• Colors: Predominantly white with black, tan, or tricolor markings (white/black/tan).

• Devoted: Loyal to their families, often picking a favourite person.
• Hunting Drive: Strong prey drive; may not suit homes with small pets (rabbits, guinea pigs).

• Extremely Energetic: Bred to hunt; excel in dog sports like agility.

• Good Family Dogs: Great with older children if socialized, but can be nippy with toddlers if not managed.
• Feisty: Can be assertive and may clash with other dogs, especially same-sex dogs, if not trained.

• Grooming: Regular grooming needed, especially for rough/broken coats; sheds.
• Garden: Secure fencing is vital due to their high energy and escape artistry.

• History: Developed by Rev. John Russell in England for fox hunting; recognized by The Kennel Club in 2016.
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• Health: Generally long-lived (10+ years), but prone to skin issues like atopic dermatitis (eczema).

• Intelligent: Highly smart but can be stubborn, making training a challenge.
• Independence: Strong-willed; need firm, consistent training and early socialization.

• Jumping: Capable of impressive jumps (over 5 feet).
• Joyful Companions: Playful and affectionate when their needs are met.

• Recognition: Officially recognized by The Kennel Club (UK) in 2016.

• Loyal: Fiercely devoted to their owners.
• Lifespan: Typically 10+ years.

M –

• Male vs. Female: Males are often slightly bigger and more exuberant; females are similar in size, both loyal companions.
• Muzzle/Head: Good JRTs have strong heads, correct muzzle length, and wide jaws.
• Mood/Temperament: Confident, energetic, loyal, friendly, but can be aggressive to unknown dogs; need firm leadership.
• Nutrition: Transition from puppy to adult small breed food around 10 months, slowly.
• Personality: Big personality in a small body, tenacious, intelligent, always ready for action.
• Pregnancy: Gestation is about 60 days, requiring vet monitoring.

S –

• Size: 10-12 inches tall, 9-15 pounds, though variations exist.

T-

• Terrier Types: Different kennel clubs recognize variations like the Parson Russell Terrier and the American Jack Russell.