Crocodilians use tools for hunting

  title={Crocodilians use tools for hunting},
  author={Vladimir Dinets and J.C. Brueggen and John D. Brueggen},
  journal={Ethology Ecology \& Evolution},
  pages={74 - 78}
Using objects as hunting lures is very rare in nature, having been observed in just a handful of species. We report the use of twigs and sticks as bird lures by two crocodilian species. At least one of them uses this method predominantly during the nest-building season of its prey. This is the first known case of a predator not just using objects as lures, but also taking into account the seasonality of prey behavior. It provides a surprising insight into previously unrecognized complexity of… 

An experimental test of crocodilian stick-displaying behavior

The hypothesis that crocodilians are true tool users is called into question after it was found that in most comparisons the frequency of stick-displaying behavior did not differ between rookery and no-rookery sites, while in one comparison the alligators at a no- rookery site actually displayed the behavior more frequently than a paired rookery site.

Surveying death roll behavior across Crocodylia

The patterns of death roll behavior observed suggest that this behaviour is not novel to any one crocodylian clade, morphotype, or dietary niche, and the prevalence of death rolling behaviour across Crocodylia in response to perceived threats indicates that it is not solely, or maybe even primarily, a feeding behaviour, but is also utilised during inter- and intra-specific conflict as a means to escape or injure an opponent.

Uso de fezes para atrair insetos por um besourinho-de-bico-vermelho, Chlorostilbon lucidus (Apodiformes: Trochilidae)

This study describes the occurrence of a female Glittering-bellied Emerald, Chlorostilbon lucidus , using feces to attract insects to the nesting site for predation. This is the first report of a

Predation behaviour of the European squid Loligo vulgaris

This study is the first to examine the hunting and feeding behaviour of Loligo vulgaris, and finds that better prey-handling skills and larger feeding apparatus of larger squid (older/experienced individuals) are the likely causes.

Reptiles, Biodiversity of

  • F. H. Pough
  • Environmental Science, Biology
    Reference Module in Life Sciences
  • 2022

Size, sex and individual-level behaviour drive intrapopulation variation in cross-ecosystem foraging of a top-predator.

The results demonstrate the importance of intrapopulation characteristics (body size, sex and individual specialization) as key determinants of the strength of predator-driven ecosystem connectivity resulting from cross-ecosystem foraging behaviours.

Revisiting Russell’s troodontid: autecology, physiology, and speculative tool use

The osteology, morphology, and ecology of the small theropod “Stenonychosaurus inequalis” are described in two papers, speculating on its life habits, brain power, vision, movement, and feeding habits.

Direct and indirect interactions with vegetation shape crocodylian ecology at multiple scales

1CSIRO Land and Water, Floreat, Western Australia, Australia 2School of Biological Sciences, University of Western Australia, Crawley, Western Australia, Australia 3Queensland Parks and Wildlife,

Neural Processes Underlying Tool Use in Humans, Macaques, and Corvids

A possible neural network for tool use in macaques is suggested and it is hoped this might inspire research to discover a similar brain network in corvids and establish a framework to elucidate the neural mechanisms that supported the convergent evolution of toolUse in birds and mammals.

Reinstating reptiles: from clueless creatures to esteemed models of cognitive biology

This special issue highlights current research on reptiles in cognitive biology and showcases the diversity of research questions that can be answered by using reptiles as study model and discusses and illustrates the promising potential of reptiles as model organisms in various areas of cognitive research.



Crocodiles & alligators of the world

The volumes provide clear, basic information on physiology, classification, habitat, life cycle, and behavior, including such diverse topics as courtship and mating, egg-laying and development, reproduction and parental care, food and feeding.

Effects of aquatic habitat continuity on signal composition in crocodilians

  • V. Dinets
  • Environmental Science
    Animal Behaviour
  • 2011

Collective Vigilance in the Greater Kudu: Towards a Better Understanding of Synchronization Patterns

Collective detection of predators is one of the main advantages of living in groups in prey species. However, the mechanisms linking individual and collective vigilance remain largely unknown. Here,

Death in the Everglades: The Murder of Guy Bradley, America's First Martyr to Environmentalism

"This is a fascinating account of the Florida plume hunters, the devastation they wrought, and the slow, painful progress--exemplified bravely on the hunting grounds by Guy Bradley--of the bird

Breaking the Social–Non‐social Dichotomy: A Role for Reptiles in Vertebrate Social Behavior Research?

The diversity and complexity of reptile social systems are highlighted, reasons for their historical neglect in research are reviewed, and how reptiles can contribute to the understanding of the evolution of vertebrate social behavior are indicated.



Foreword, pp

  • ix–xi, In: Shumaker R.W. et al., Eds. Animal tool behavior: the use and manufacture of tools by animals. Baltimore, MD: The Johns Hopkins University Press.
  • 2011