I moved my mare into a new pasture for the summer. I just noticed 2 days ago that she had thick, pale yellow nasal discharge. Her breathing is fine, her heart rate is normal, and I did the pinch test on her, and she is well hydrated. Looked at her teeth and gums, all are pink and normal looking. Her breathing is normal, she's still eating, and moving about the pasture with her herd mates. What could have caused her to get such a runny nose? Could it be allergies? I'm stumped on what this could be. Any thoughts and advice would be greatly appreciated.
And any possible ideas on how to treat this would be awesome too!