Toothed whale brain size with the expected brain size based on such allometric analysis provides an encephalisation quotient that can be used as another indication of animal intelligence. Sperm whales have the largest brain mass of any animal on earth, averaging and in mature males, in comparison to the average human brain which averages in mature males. The brain to body mass ratio in some odontocetes, such as belugas and narwhals, is second only to humans. Dolphins are known to engage in complex play behaviour, which includes such things as producing stable underwater toroidal air-core vortex rings or "bubble rings". Two main
Creature with the Atom Brain (film) Creature with the Atom Brain (film) Creature with the Atom Brain is a 1955 American black-and-white zombie science fiction film from Columbia Pictures, produced by Sam Katzman, directed by Edward L. Cahn, that stars Richard Denning, Angela Stevens, S. John Launer, Michael Granger and Gregory Gaye. The screenplay was written by Curt Siodmak. American gangster Frank Buchanan (Granger) forces former Nazi scientist Wilhelm Steigg (Gaye) to create zombies by resurrecting corpses through atomic radiation in order to help him exact revenge on his enemies. "Creature with the Atom Brain" was released as the bottom half of a double feature with