The Flemish Giant rabbit is one of the largest breeds of domestic rabbits, earning the name, "King of Rabbits." Originally, these rabbits were bred for their fur and meat. It's origins are quite vague. It is believed that these rabbits are descended from the Patagonia Rabbit, possibly crossed with another rabbit. Also, no one is sure as to what region these rabbits are from.
The difference in does (females) and bucks (males) can be told by looking at their head. Bucks have a broader head while does' are dainty and have a dewlap, a fold of skin under their chin, used to keep kits (baby rabbits) warm.
The Flemish Giant rabbit has other nicknames besides "King of Rabbits." The name "Gentle Giants" was earned because unlike the smaller domestic rabbit, Flemish Giants are known for being much more calm and gentle. They are also called the "Universal Rabbit" mainly for being great pets and show animals, although, it could also be because of their use as a resource for food and material.