Fig. 3

Polynomial smooth plot of average percent lean (95% CI) by age for each longevity category. Groups are based on tertiles of survival: expected (red line), long-lived (white line), and exceptional (orange line) for 39 dogs including all available DEXA data. The change in percent lean showed a similar but mirrored pattern to percent fat (Fig. 2) with a decrease in percent lean until approximately 11 years for the expected and long-lived groups and 12 years for the exceptional group, respectively. After this, the percent lean stabilised