1. The smallest dog.
In terms of height, the smallest dog is a female chihuahua named Milly, which is 9.65 cm (3.8 inches) tall and owned by Vanessa Semler from dorado, Puerto Rico. On December 1st, 2011, when Milly (or Miracle Milly, the name on its pedigree certificate) was born, she was weighed less than 1 ounce (28 grams) and could be put into a teaspoon. She must be fed with a dropper at that time. At the age of one, it was weighed about 567 grams (20 ounces).
2. The tallest dog.
Zeus, a Great Dane from Michigan, USA, is the tallest dog in history. It is as tall as 111.8 cm (44 inches), which is the same as that of an ordinary donkey. This huge dog weighs 70.3 kilograms (155 pounds or 11 stone) and eats about 12 cups of food every day (equivalent to a whole bag of 30 pounds of food).
3. The longest (and heaviest) dog.
The longest (and heaviest) dog on the historical record is Aicama Zorba of La-Sus (born on September 26th, 1981), it is an ancient British mastiff owned by Chris Elaclides from London, England. In September 1987, its length from nose to tail was 2.544 meters (8 feet 3 inches).
4. The longest dog ears.
The longest left and right ears of dogs are 34.9 cm (13.75 inches) and 34.2 cm (13.5 inches) respectively. They belong to Tigger, a bloodhound, owned by Brian and Christina Fleissner from St. Joseph, Illinois, USA. It was recorded on September 29th, 2004. Tigger has won many dog show champions and more than 180 BOBs. In 2003, it was officially selected into the "Dog Hall of Fame" in bloodhounds division. He passed away in October 2009.
5. The longest dog eyelashes.
The longest eyelashes of the dog is 17 cm (6.69 inches), belonging to a mixed-race dog named Ranmaru (from Japan). It's right eyelash was measured in Tokyo, Japan on September 4th, 2014, and it was only 3 years and 8 months old by that time.
6. The longest dog tongue.
The longest tongue of a dog is 18.58 cm (7.31 inches) long, belonging to Mochi. It is a female St. Bernard owned by Carla and Craig Richter (both are American), and the tongue was measured in Sioux Falls, South Dakota, USA on August 25th, 2016. Mochi was rescued by Richter's family when it was two years old. Its owner Carla Richter said, "We love it unconditionally, even though its crazy, long tongue makes people stare and laugh at."