We propose a practical concept that distinguishes the particular kind of weaponry that has
evolved to be used in combat between individuals of the same species and sex, which we …

Intelligence in large-brained vertebrates might have evolved through independent, yet
similar processes based on comparable socioecological pressures and slow life histories …

With their large brains, elaborate sense organs and complex behaviour, cephalopods are
among the world's most highly evolved invertebrates. This second edition summarises the …

This is the first volume of the entirely rewritten, revised and updated version of the original
FAO Catalogue of Cephalopods of the World (1984). The present Volume is a multiauthored …

It is difficult to imagine what an animal as different from us as the octopus 'thinks', but we can
make some progress. In the Umwelt or perceptual world of an octopus, what the lateralized …

Octopods are masters of camouflage and solve complex tasks, and their cognitive ability is
said to approach that of some small mammals. Despite intense interest and some research …

Cephalopods show behavioral parallels to birds and mammals despite considerable
evolutionary distance [1, 2]. Many cephalopods produce complex body patterns and visual …

Simple Summary Octopuses are charismatic animals commonly kept in aquaria and
increasingly used for scientific research. As we begin to care for more of these animals in …

Over thirty years ago anecdotal accounts of the undescribed Larger Pacific Striped Octopus
suggested behaviors previously unknown for octopuses. Beak-to-beak mating, dens shared …

Classically the neurobiology of aggression has been studied exclusively in males. Thus,
females have been considered mildly aggressive except during lactation. Interestingly …