Ryan Schude/Guinness World Records

A Black and Tan Coonhound named Harbor has the longest ears of any living dog, with measurements of 12.25 in for the left ear and 13.5 in for the right. The Guinness World Records 2012 is out on September 15.

Meet Harbor, an eight-year-old black and tan Coonhound from Boulder, Colorado, who has two enormous ears -- and a lot of charm.

His ears are so long, he's been included in the Guinness World Records 2012 edition, which hits bookstores on Sept. 15. The stats that won him a spot in the book: His left ear is 12.25 inches long, and his right ear measures in at 13.5. As a puppy, his ears would make him trip and roll down the stairs.

These days, people just like to grab his ears and give them a tug. "Most days I forget how oddly long his ears are," owner Jennifer Wert told Guinness. "He’s a phenomenon in the world and he creates smiles wherever we go."