Fig. 7. Residual litter mass (A) and residual pup body mass (B) as a function of residual asymptotic food intake for mice at 30°C raising 6-15 pups (N=61). Litter mass (g) and pup body mass (g) refer to day 14 of lactation. Pup body mass is the litter mass divided by litter size. Asymptotic food intake (g day^-1) is the mean value for days 9-13 of lactation. Both correlations (A and B) are significant (for statistical details, see Results).