World’s Tallest Dog Meets World’s Smallest

Despite their radical difference in size, these two dogs have something in common - Gibson the Great Dane and Boo Boo the toy Chihuahua are both world record holders. Measuring a whopping 42-inches, gentle giant Gibson was named tallest dog back in 2004. Joining him in the hall of fame for 2007 is tiny Boo Boo who only measures 4-inches tall and is smaller than Gibson’s head.