Zeus was dubbed both the tallest and biggest dog in the world by Guinness World Records from 2011 to 2013. At age three, Zeus was already 44 inches tall—that's 3 feet, 8 inches—from the base of his ...

Looking at a Great Dane next to a Chihuahua can be pretty comical. While Great Danes often stand around 32 inches tall, a Chihuahua’s average height is under 9 inches. Geneticists are still on the ...