The measured difference is 0.0 years in this UK dataset.
MeasureFrench BulldogBulldog (English)
UK median survival9.8 years9.8 years
95% confidence interval9.4–10.1 years9.7–10 years
Source records14,31615,808
Descriptive result
Neither record has the higher point estimate in this source table. That does not prove that one individual animal will live longer, remain healthier or cost less than another.
Survival is not the same as healthspan.
The source comparison does not measure mobility, cognition, independence, lifetime veterinary cost or the effect of a supplement. Differences can reflect population composition, health, care and other confounding.