The Bull Shark is known for its aggressive nature, predilection for warm shallow water, and presence in brackish and freshwater systems including estuaries and rivers. The name "Bull Shark" comes from the shark's stocky shape, broad, flat snout, and aggressive, unpredictable behavior; its name does not come from it being half bull half shark. Female Bull Sharks are larger than male Bull Sharks but both top out at just under 4 meters (13.1 feet). The Bull Shark's most dangerous quality is its ability to survive for long periods of time in freshwater despite being a saltwater shark. The Bull Shark's diet consists mainly of bony fish and small sharks, including other Bull Sharks. Bull Sharks are also known to eat turtles, birds, dolphins, terrestrial mammals (including people), crustaceans, echinoderms, and stingrays. As part of their survival mechanism, bull sharks will regurgitate the food in their stomachs in order to escape from a predator. This is a distraction tactic, if the predator moves to eat the regurgitated food the bull shark can use the opportunity to escape. Bull Sharks mate during late summer and early autumn, during this time both the males and the females are much more aggressive. Bull Shark young gestate for 12 months and are born in "litters" of 1 to 13; they reach maturity at the age of 10 and are able to reproduce at the age of 15. Bull Sharks live longer than most breeds of sharks but rarely die of old age due to their aggressive tendencies. Instinct: To feed

• Stalk Prey