Whale a large tail fin, and flat heads (with the exception of monodontids and ziphiids). Whale skulls have small eye orbits, long snouts (with the exception of monodontids and ziphiids) and eyes placed on the sides of its head. Whales range in size from the and dwarf sperm whale to the and blue whale. Overall, they tend to dwarf other cetartiodactyls; the blue whale is the largest creature on earth. Several species have female-biased sexual dimorphism, with the females being larger than the males. One exception is with the sperm whale, which has males larger than the females. Odontocetes, such as
Killing of animals by crawling up the target's nose and eating the targets' brain. Most attacks happen in moist areas like ponds or lakes. In the middle is the blowfish ("fugu") that can kill animals with its toxic organs that contain tetrodotoxin. The largest animal killer is the blue whale, which is the largest animal on Earth. The blue whale mostly feeds on krill ("euphausiacea") which is a small, abundant crustacean. Blue whales are almost entirely killed by killer whales and by humans. Chimpanzees wage war against rival groups, killing rival males and eating the baby chimps. Ants also wage warfare on other