Crusty noses?
My friend has pet rats, which he cares for immaculately and spoils (since they are his pets), and he likes to play with genetics. Since he has no use for babies, I always get them, or any adults he needs to get rid of when he wants to downsize. He had a rat with a crusty nose, I didn't get a good look, but figured it was from another rat, well a few of mine started getting the same crusty noses (about 3% of the population), and I received some more form him, and a few of them have mildly crusty noses. Is this a common condition and how is it generally treated?
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