Fig. 4From: Body mass is associated with hibernation length, body temperature, and heart rate in free-ranging brown bearsHeart rate (HR) in winter: Predicted mean daytime HR for hibernating brown bears with body mass of 40Â kg (orange solid line), bears with body mass of 120Â kg (blue dashed line), and mean smoothed values for each bear winter (grey solid line). Shaded areas display 95% confidence intervals. HR data from 1 December to 23 FebruaryBack to article page