People often think a dog's mouth is cleaner than a human's mouth. According to Dr. Leni K. Kaplan of Cornell University College of Veterinary Medicine, the reason people believe this because when a dog licks a wound, it can remove debris and contamination, which sometimes expedites the healing process.

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More metro Atlanta sellers are deciding to take their homes off the market, according to a new report. (Hyosub Shin/AJC)

Credit: HYOSUB SHIN / AJC