Created by Dr. Kelly M. Cassidy, 2007
Breed Weight and Lifespan
Last edited 07/08/2007
Table of weight and longevities
This table contains the data used to create the chart above. The data in the table are split into more weight groups than the chart.
Breed longevities are derived from the averages of the available surveys for each breed, weighted by the sample size of the individual surveys. Only breeds with a total sample size of greater than 20 are included. For the survey data and sample sizes for each breed, see the Breed Data page. Most breed names have been abbreviated in the interest of making a more compact table. Hopefully, the abbreviations are self-explanatory.
Note that these data are the questionnaire averages, weighted by sample size. For some breeds, longevity was considerably greater in some countries than in others, so the average longevity may not represent the breed in a particular country. Manchester Terriers, for example, lived an average of 12.8 yr in the UK (based on a survey with a small sample size of 32) and 8.3 yr in the USA/Canada survey (based on a survey with a larger sample size of 110), giving a mean longevity of 9.3 yr (closer to the USA/Canada longevity because of the weighting by sample size).