DogsLifeBreed profile
Jack Russell Terrier: size, sleep, exercise and care
A small, fearless working terrier with a huge appetite for activity. Jack Russells are clever, bold and happiest with something to do.
At a glance
- Size
- Small
- Adult weight
- 5–6 kg
- Height at the shoulder
- 25–30 cm
- Life expectancy
- 12–14 years
- Exercise needs
- Moderate · 60 min per day
Sleep needs
Typical total sleep per 24 hours, including naps.
| Puppy | Adult | Senior |
|---|---|---|
| 18–20 h | 12–14 h | 12–15 h |
These are general life-stage ranges for dogs from the AKC and Hill's; no study gives a separate figure for the Jack Russell Terrier. Individual dogs vary, and a sudden change in how much your dog sleeps is worth mentioning to your vet.
Exercise needs
PDSA recommends a minimum of an hour a day, and The Royal Kennel Club lists up to an hour. In practice many Jack Russells take more if offered. Add digging boxes, flirt-pole games, scent work and short training sessions: a bored terrier tends to make its own entertainment. Strong prey drive means recall around wildlife is never guaranteed.
Potty training
Jack Russell puppies are bright but independent, so make going outside quick and rewarding. Take them out after waking, eating and play, use a lead to the same spot and reward straight away.
Keep a close eye indoors during the first months; a small, busy puppy can slip off to a quiet corner fast.
Puppy potty schedule calculator →
Feeding
Feed a complete food for small, active breeds: three to four meals a day for young puppies, two for adults. Because Jack Russells are small, weighing food matters more than it seems.
Using part of the daily ration in food puzzles and training gives this busy breed a useful outlet. Adjust portions to activity: a working terrier and a sofa terrier need very different amounts.
Puppy feeding schedule calculator →
A note on names
The FCI and The Royal Kennel Club call this breed the Jack Russell Terrier. The AKC recognises the same short-legged type as the Russell Terrier, and the longer-legged Parson Russell Terrier is a separate breed.
Frequently asked questions
How big is a Jack Russell Terrier?
The FCI standard gives an ideal height of 25–30 cm and about 1 kg per 5 cm of height, so roughly 5–6 kg.
How much exercise does a Jack Russell need?
At least an hour a day according to PDSA, plus mental games and training.
Sources
- FCI standard No. 345: Jack Russell Terrier — Fédération Cynologique Internationale
- Jack Russell Terrier: breed information and exercise — The Royal Kennel Club
- Jack Russell Terrier breed guide — PDSA
- Russell Terrier dog breed information — American Kennel Club
- How much do puppies sleep? — American Kennel Club
- How much should my dog sleep per day? — Hill's Pet Nutrition
- Can senior dogs sleep too much? — American Kennel Club