Personality
Jack Russells are bold, intelligent, and opinionated. They were bred to work independently - hunting foxes underground - and that independent streak is woven into everything they do. They're loyal and devoted to their people, but they haven't read the chapter about doing what they're told the first time.
They're energetic, curious, and easily bored. A bored Jack Russell is a destructive Jack Russell. Mental stimulation is as important as physical exercise - puzzle feeders, training, and scent work all help.
Exercise
An hour to an hour-and-a-half of daily exercise is typical, but quality matters as much as quantity. Off-lead time to explore and sniff is valuable. Be aware that their prey drive is strong - recall in the presence of other animals can be challenging and requires consistent training.
Weight and Feeding
Healthy adult weight: 5–8 kg. Their small size means caloric needs are modest - be careful with treats, which add up quickly in small dogs.
Health
Patellar luxation - the kneecap slipping out of joint; common in small breeds and worth monitoring. Track Luxating Patella →
Lens luxation - a genetic eye condition that can cause glaucoma; DNA test available.
Legg-Calvé-Perthes disease - degeneration of the hip joint; more common in small breeds.
Deafness - more common in white-coated Jack Russells; a BAER hearing test can confirm.
Skin allergies - some lines are prone to environmental and food allergies. Track Skin Allergies →
Grooming
Smooth-coated Jack Russells need minimal grooming - a weekly brush is sufficient. Rough or broken-coated types need hand-stripping twice a year (not clipping, which changes the coat texture) or regular professional grooming.
Frequently Asked Questions
Are Jack Russells good family dogs? With older children who respect their boundaries, yes. They can be snappy if pestered and aren't ideal with very young children. They tend to be devoted to their immediate family.
How long do Jack Russells live? 13–16 years is typical, making them one of the longer-lived small breeds.
Are Jack Russells good with other dogs? Variable - they can be dog-selective and have high prey drive, which complicates introductions with some breeds. Early socialisation helps significantly.
Are Jack Russells easy to train? They're highly intelligent, which is both a help and a hindrance. They pick things up quickly but get bored just as fast, and their independent nature means they'll decide whether following an instruction is worth their time. Short, engaging sessions with high-value rewards work best.
How much exercise do Jack Russells need? More than their size suggests. Without enough activity and mental stimulation, they become destructive. Around 1–1.5 hours daily is appropriate for most adult Jack Russells.