Figure 15.

Estimated means (± 95% CI) for mean left eye temperature, mean right eye temperature, the difference in left and right mean eye temperature, left ear temperature, right ear temperature, the difference in left and right ear temperature, and mean nose temperature (all °C) following test scenarios anticipated to produce positive valence responses varying in arousal (high vs low) and food provision (no food vs food provided). These scenarios included those anticipated to produce positive valence low arousal without food (calm petting), positive valence high arousal without food (toy play), positive valence low arousal with food (chew), and positive valence high arousal with food (treat-throwing). ** indicates a significant difference of p < 0.010. *** indicates a significant difference of p < 0.001.