Nile Crocodile Expedition Dossier
The Nile crocodile (Crocodylus niloticus) is Africa's largest freshwater predator, growing up to 20 feet (6 meters) long and weighing over 1,650 pounds (750 kg). These ancient reptiles have inhabited Earth for over 55 million years, outliving dinosaurs. They dominate rivers, lakes, and marshes across sub-Saharan Africa.
Evolutionary Mastery
- Perfect Predator: 66-68 conical teeth replaced continuously throughout life (about 2,000 teeth in a lifetime)
- Powerful Jaws: Bite force of 5,000 psi (compared to lions at 650 psi)
- Advanced Senses: Transparent third eyelid, nostrils that seal shut, and pressure receptors detect vibrations in water
- Metabolic Control: Can survive 2 years without eating after a large meal
- Temperature Regulation: Maintains 30-33°C body temperature through basking and water immersion
Wild Behavior & Hunting
Nile crocodiles are ambush predators that can remain motionless for hours, appearing like floating logs. They employ the "death roll" technique - spinning violently to dismember prey. Remarkably social, they communicate through over 20 vocalizations including bellows, hisses, and infrasound below human hearing range.
Mothers are exceptionally caring, carrying hatchlings in their mouths to water and guarding nests for 3 months. Temperature determines offspring sex: below 31.6°C produces females, above produces males. Juveniles form crèches protected by multiple adults.
Safari Fascinations
- Can launch entire body length vertically from water
- Stomach stones (gastroliths) help digestion and buoyancy
- Blood contains powerful antibiotics against infections
- Ancient Egyptians mummified crocodiles as manifestations of Sobek
- Can swim at 22 mph (35 km/h) using powerful tail
- Live 70-100 years - among longest-living reptiles
- Eyes glow red at night - helpful for night safari spotting
- Responsible for about 300 human deaths annually
- Young crocs sometimes ride on adults' backs
- Heart has 4 chambers like mammals (unlike other reptiles)
Observe these magnificent prehistoric survivors on our River Safari Adventures - with safe viewing platforms and expert guides!
