Panting

Panting can be used to evaluate thermal comfort.

Drooling

Saliva (clear, transparent) comes out of the cow's mouth; cow is not ruminating; any quantity of visible saliva counts as drooling

Open mouth; space between the lips is visible; cow is not ruminating

Protruding tongue; tongue tip or more crosses the lower teeth and it does not touch any body parts (e.g. not grooming)

To practice scoring signs of panting, click the link below; this will take you to the Tucker Lab Heat Stress Outreach website.