My gerbil has a sore, red, or bleeding nose. Whats wrong?
He probably has an allergy to the bedding. Switch to aspen chips if you are using pine. If you are already using aspen, try CareFresh or corncob. If it persists, give him an antibiotic for a few days and that should clear it up. A topical antibiotic will work best in these situations; oral antibiotics may not work unless the gerbil has another infection or illness. See section 4.6 for more information on bedding types.