TL;DR
The typical Border Collie lifespan is about 12 to 14 years, longer than most dogs of its size. In a 2024 UK study of 584,734 dogs, Border Collies had a median lifespan of 13.1 years, against 12.0 years for mixed breeds, and UK life tables gave a life expectancy at birth of 12.10 years, third highest of 18 common breeds. The breed's best-known serious health risk is idiopathic epilepsy: in a study of 116 Border Collies with epilepsy, the first seizure came at a median of 33.5 months, and 60% of treated dogs needed two or more anti-seizure medicines. Unlike many herding breeds, Border Collies appear free of the MDR1 drug-sensitivity mutation. A Border Collie is a senior from about 9.8 years.
How long do Border Collies live?
| Measure | Border Collie | Mixed breed |
|---|---|---|
| Median lifespan, 2024 UK study (7,969 deaths) | 13.1 years | 12.0 years |
| 95% confidence interval | 13.0 to 13.2 years | 12.0 to 12.1 years |
| Life expectancy at birth, UK life tables | 12.10 years | 11.82 years |
| Senior from about (last 25% of lifespan) | 9.8 years | 9 years |
Border Collie age in human years
| Dog's age | Life stage | Roughly like a person aged |
|---|---|---|
| 4 years | Mature adult | 24 |
| 5 years | Mature adult | 30 |
| 6 years | Mature adult | 36 |
| 7 years | Mature adult | 42 |
| 8 years | Mature adult | 48 |
| 9 years | Mature adult | 54 |
| 10 years | Senior | 60 |
| 11 years | Senior | 66 |
| 12 years | Senior | 72 |
| 13 years | Senior | 78 |
| 14 years | Senior, past the median | 84 |
| 15 years | Senior, past the median | 90 |
| 16 years | Senior, past the median | 96 |
This uses the share of the breed's typical lifespan a dog has lived, compared with US human life expectancy of 79 years. For puppies and young dogs, the DNA-based method in the calculator below is more accurate. Try any age:
Dog age calculator
Enter your dog's age and breed. Choose "Mixed breed" if you are not sure.
Human age (DNA method)
64
From age-related DNA changes in Labradors compared with people (Wang 2020). Least reliable for puppies under a few months.
Same point in a human life
53
Your dog has lived about 67% of the typical 12.0-year lifespan for this group. The same share of a 79.0-year US life expectancy is age 53.
Life stage
Mature adult
AAHA: from maturity until the last 25% of expected lifespan, about 9.0 years for this group.
Mixed breed (crossbreed): median lifespan 12.0 years (95% CI 12.0 to 12.1), senior from about 9.0 years.
Lifespans: UK study of 584,734 dogs (McMillan 2024). Life stages: AAHA. Every dog ages differently; health, weight and lifestyle all matter.
Epilepsy in Border Collies
Idiopathic epilepsy means recurrent seizures without another identifiable cause. Its prevalence in Border Collies is high. In a study of 116 Border Collies with epilepsy seen at three referral hospitals:
- The median age at the first seizure was 33.5 months, ranging from 6 months to more than 15 years.
- 60% of treated dogs needed two or more anti-seizure medicines.
- Dogs that had cluster seizures or prolonged seizures had their first seizure younger (median 27 months versus 43 months).
- Owners scored their dog's quality of life a median 7 out of 10.
In a UK study of primary-care records, Border Collies with epilepsy had a median survival time of 1,393 days (about 3.8 years), longer than previously reported for the breed.
What to do: if your Border Collie has a seizure, time it and film it, and see your vet. A seizure lasting more than 5 minutes, or several in a row, is an emergency. Early, consistent treatment gives the best control.
No MDR1 mutation
Many herding breeds, including Collies and Australian Shepherds, carry the ABCB1 (MDR1) mutation that makes some drugs, such as ivermectin, dangerous. In a European survey of 4,729 dogs, the mutation frequency in Border Collies was 0%, against 58.5% in Smooth Collies and 35% in Australian Shepherds. A Border Collie mix may still carry it, so ask your vet about testing if your dog is mixed with a Collie or Aussie.
Staying active into old age
Border Collies are high-energy working dogs, and years of running take a toll on the joints. As your Collie ages:
- Switch from repetitive ball-chasing and jumping to steady walks, swimming and scent work.
- Keep the mind busy. See mental stimulation for senior dogs.
- Keep it lean, and support the joints. In a 2006 trial, 67% of dogs with joint disease improved on green-lipped mussel extract by day 56, against 41% on placebo. Our green-lipped mussel powder is a single-ingredient topper. See senior dog exercise.
How to help a Border Collie live longer
- Know the signs of a seizure and get treatment early.
- Lower-impact exercise as it ages, plus daily brain work.
- Keep it lean and protect the joints.
- Choose a breeder who screens for inherited eye and other conditions.
- Twice-yearly vet checks from about 9.8 years.
FAQ
How long do Border Collies live?
Most live about 12 to 14 years. A 2024 UK study of 584,734 dogs found a median lifespan of 13.1 years.
Do Border Collies get epilepsy?
Yes, epilepsy is common in the breed. In a study of 116 affected Border Collies, the first seizure came at a median of 33.5 months, and 60% of treated dogs needed two or more medicines.
Is 12 old for a Border Collie?
A Border Collie is a senior from about 9.8 years. At 12 it has lived about 92% of the breed's median lifespan, roughly like a person aged 72.
Do Border Collies have the MDR1 gene?
In a European survey, none of the Border Collies tested carried the MDR1 mutation, unlike Collies and Australian Shepherds. Mixed-breed Collies may still carry it.
How can I help my Border Collie live longer?
Keep it lean and active with joint-friendly exercise, keep its mind busy, treat seizures early, and book twice-yearly checks from about 9.8 years.
References
- McMillan KM, et al. Longevity of companion dog breeds: those at risk from early death. Scientific Reports. 2024. PMID: 38302530
- Teng KT, et al. Life tables of annual life expectancy and mortality for companion dogs in the United Kingdom. Scientific Reports. 2022. PMID: 35484374
- Santifort KM, et al. Phenotypic characterization of idiopathic epilepsy in Border Collies. Frontiers in Veterinary Science. 2022. PMID: 35647099
- Van Meervenne S, et al. Associations between neutering and idiopathic epilepsy in Labrador retrievers and Border collies under primary veterinary care in the UK. The Veterinary Journal. 2019. PMID: 31554590
- Firdova Z, et al. The prevalence of ABCB1:c.227_230delATAG mutation in affected dog breeds from European countries. Research in Veterinary Science. 2016. PMID: 27234542
- Pollard B, et al. Clinical efficacy and tolerance of an extract of green-lipped mussel in dogs presumptively diagnosed with degenerative joint disease. New Zealand Veterinary Journal. 2006. PMID: 16751841
For individual health questions, your veterinarian remains the best partner.
