Merry Christmas eve!
I have a senior horse, age 31, who presented with a bad deep cough. When he didn’t get better we had the vet out who said he has fluid in his lungs. We put him on antibiotics and also did two steroid shots. This morning he had white thick mucus out of one side of his nose. Is this cause for additional concern and another call to the vet? Today is his third day on antibiotics.