Crocodile true river monsters

Crocodiles or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. Crocodylinae, all of whose members are considered true crocodiles, is classified as a biological subfamily. 

Scientific name: Crocodylinae

Family: Crocodylidae

Lifespan: Salt water crocodile : 70 years, Nile water crocodile : 70 – 100 years

Speed: Salt water crocodile : 24 – 29 km/h, American crocodile : 32 km/h, more. 

Mass: Salt water crocodile : 400 – 1,000 kg, American crocodile : 400 – 500 kg, more. 

Length: salt water crocodile : 4.3 – 5.2 m, American crocodile : 4.1 – 4.8 m,