Weakest molariform bite force for a crocodile

The crocodile with the weakest molariform bite force (the bite force exerted by the molariform – molar-like – teeth) recorded is Cuvier's dwarf caiman (Paleosuchus palpebrosus), native to many parts of South America, including Brazil, Bolivia, Colombia and Ecuador. In a comprehensive 2012 study of bite force in crocodilians, specimens of all 23 species of living crocodilian were utilized to obtain a range of bite force readings for each species. The weakest molariform bite force recorded was 667 N, from one of three specimens of Cuvier's dwarf caiman. In comparison, the strongest molariform bite force recorded was 16,414 N, from a specimen of the saltwater crocodile (C. porosus).

As its name suggests, Cuvier's dwarf caiman is a small species, which preys upon fish, amphibians, large molluscs and other invertebrates. It relies upon very sturdy body armour in the form of bony-based dermal scales to protect it from predators. And in terms of bite force, it also yields the weakest mean caniniform bite force, at just 576 N. However, a single specimen of the freshwater crocodile (Crocodylus johnsoni) registered an even lower bite force of 436 N.

The research was published on 14 March 2012 in PLOS ONE in a collaborative study by scientists from Florida State University, California State Polytechnic University, the University of Florida, St. Augustine Alligator Farm Zoological Park (all USA) and Charles Darwin University (Australia), led by Dr Gregory M Erickson of Florida State University.