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
Red Earth, White Lies the greatest brain that our race has produced." Gordin concludes Deloria's rejection of the Bering land bridge and "attack on any affinity between Native tradition and Western culture and science" was derived from Velikovskian catastrophism, though Velikovsky himself rejected any hint of creationism. Red Earth, White Lies Red Earth, White Lies: Native Americans and the Myth of Scientific Fact is a book by Native American author Vine Deloria, originally published in 1995. The book's central theme is to criticize the scientific consensus which has, in his words, created "a largely fictional scenario describing prehistoric North America". The book's particular focus