Fig. 2From: Body mass is associated with hibernation length, body temperature, and heart rate in free-ranging brown bearsSpring body mass and age for female (dots) and male (triangles) bears from the heart rate dataset. Generalized additive model of the form spring body mass ~ s(age) with a cubic regression spline and basis dimension 3 predicting age based on body mass for females (solid line) and males (dashed line)Back to article page