White Swiss Shepherd Dog vs Border Collie
White Swiss Shepherd Dog vs Border Collie — ageing curve, human-year equivalent, senior life stage and expected lifespan, using The Royal Kennel Club's size-adjusted guidance.
Pick from 225+ Royal Kennel Club-recognised breeds.
Pick from 225+ Royal Kennel Club-recognised breeds.
White Swiss Shepherd Dog
Border Collie
White Swiss Shepherd Dog is a large breed and Border Collie is a medium breed, so they follow different Royal Kennel Club ageing curves — see the table below for how their human-year equivalents diverge over time.
| Dog years | White Swiss Shepherd Dog | Border Collie |
|---|---|---|
| 1 | 15 | 15 |
| 2 | 24 | 24 |
| 3 | 28 | 28 |
| 4 | 32 | 32 |
| 5 | 36 | 36 |
| 6 | 45 | 42 |
| 7 | 50 | 47 |
| 8 | 55 | 51 |
| 9 | 61 | 56 |
| 10 | 66 | 60 |
| 11 | 72 | 65 |
| 12 | 77 | 69 |
| 13 | 82 | 74 |
| 14 | 88 | 78 |
| 15 | 93 | 83 |
| 16 | 99 | 87 |
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Go to the calculatorHow this comparison works
The Royal Kennel Club's ageing guidance is size-based, not breed-based: every breed is assigned to one of four size bands (small, medium, large, giant), and all dogs within the same band age at the same rate. So two breeds in the same size band — a Labrador Retriever and a Golden Retriever, for example — follow an identical dog-years-to-human-years curve. The meaningful differences between same-band breeds are things like expected lifespan and typical health concerns, not the year-by-year conversion itself. Breeds in different size bands follow different curves — see the table above once you've picked two breeds.
Don't see the breed you're after? The calculator covers over 225 Royal Kennel Club-recognised breeds, and the guides hub has in-depth ageing charts for ten popular breeds.