That's right, lil North is less than his typically bright self. Before you go around thinking he's a dirty dog — he's very clean thankyouverymuch — a red yeast infection is a common ailment of white or light-colored dogs, even though you may not know the disease by this name.

The bacteria Ptyrosporin, aka red yeast, thrives on moist, damp fur and causes reddish or brown stains below the inside corners of his eyes. And, since it thrives in wet spots, Ptyrosporin may cause the infection and staining, but it's my pup's excessive tearing that makes it worse.

Find out what happened at our latest vet visit when you read more.

At North's checkup, the doc determined that something in California is triggering his allergic reaction (since it was all clear in NYC) which causes his reddish marks and excess tears. He then licks his paws, another affected area, which exacerbates the situation there with more moisture. Eeks.

While he doesn't need antibiotics to clear this up, I've gotta keep a closer eye on his eyes to make sure it doesn't get any worse. Now that I've explained what a red yeast infection is, have you ever seen this in your pets?