Merlin, a five year-old Great Dane relaxes during the EcoFabulous Event at Santa Monica College on Tuesday, April 24. Merlin is a  vegetarian  and eats a  100 percent vegetarian diet consisting of Evolution food from Petfoodshop.com. The Great Dane is famously nicknamed the gentle giant, and is usually very good with pets and children. The breed is intelligent, loyal, kind, and is not aggressive by nature.