Killer whale

A killer whale (also called an orca) was a marine mammal. The largest member of the dolphin family, it was characterised by its black body, white underbelly, and white, eye-like patches above its actual eyes.

In 1994, Dudley Dursley was described as having reached "roughly the size and weight of a young killer whale," prompting the Smeltings school nurse to urge his his mother and father to place him on a diet.

Appearances

 * Harry Potter and the Goblet of Fire