Harbor has over 60 centimetres of ears.
Today (NZ time), the black-and-tan coonhound from Boulder, Colorado, in the US, gets the 2012 Guinness World Records title for "longest ears on a living dog."
His left ear is 31.12cm long and his right is 34.29cm long.
Owner Jennifer Wert says when her eight-year-old was a puppy, he would trip on his ears and roll down stairs.
These days, Wert says people often stop them to ask questions, take photos or tug on his ears.
Tigger, a bloodhound from Illinois who died in 2009, still holds the record for longest ears ever. One was 34.29cm long, the other 34.92cm long.
Coonhounds use their ears to help with scent.