Numerical assessment in the wild: insights from social carnivores

More or less: spontaneous quantity discrimination in the domestic cat

(2016) Oxána Bánszegi et al.   ANIMAL COGNITION

What counts for dogs (Canis lupus familiaris) in a quantity discrimination task?

(2016) Maria Elena Miletto Petrazzini et al.   BEHAVIOURAL PROCESSES

Cross-modal individual recognition in wild African lions

(2016) Geoffrey Gilfillan et al.   Biology Letters

Mapping number to space in the two hemispheres of the avian brain

(2016) Rosa Rugani et al.   NEUROBIOLOGY OF LEARNING AND MEMORY

Ratio abstraction over discrete magnitudes by newly hatched domestic chicks (Gallus gallus)

(2016) Rosa Rugani et al.   Scientific Reports

Group composition effects on aggressive interpack interactions of gray wolves in Yellowstone National Park

(2015) Kira A. Cassidy et al.   BEHAVIORAL ECOLOGY

Quantity discrimination by zebrafish (Danio rerio).

(2015) Davide Potrich et al.   JOURNAL OF COMPARATIVE PSYCHOLOGY

Numerical discrimination by frogs (Bombina orientalis)

(2014) G. Stancher et al.   ANIMAL COGNITION

The use of proportion by young domestic chicks (Gallus gallus)

(2014) Rosa Rugani et al.   ANIMAL COGNITION

The long and the short of it: Rule-based relative length discrimination in carrion crows, Corvus corone

(2014) Felix W. Moll et al.   BEHAVIOURAL PROCESSES

Spontaneous versus trained numerical abilities. A comparison between the two main tools to study numerical competence in non-human animals

(2014) Christian Agrillo et al.   JOURNAL OF NEUROSCIENCE METHODS

Discrimination of small quantities by fish (redtail splitfin, Xenotoca eiseni)

(2013) Gionata Stancher et al.   ANIMAL COGNITION

Nestling barn owls assess short-term variation in the amount of vocally competing siblings

(2013) Charlène A. Ruppli et al.   ANIMAL COGNITION

One, two, three, four, or is there something more? Numerical discrimination in day-old domestic chicks

(2013) Rosa Rugani et al.   ANIMAL COGNITION

From small to large: Numerical discrimination by young domestic chicks (Gallus gallus).

(2013) Rosa Rugani et al.   JOURNAL OF COMPARATIVE PSYCHOLOGY

Bears ‘count’ too: quantity estimation and comparison in black bears, Ursus americanus

(2012) Jennifer Vonk et al.   ANIMAL BEHAVIOUR

A comparison of innovative problem-solving abilities between wild and captive spotted hyaenas, Crocuta crocuta

(2012) Sarah Benson-Amram et al.   ANIMAL BEHAVIOUR

Putting the elephant back in the herd: elephant relative quantity judgments match those of other species

(2012) Bonnie M. Perdue et al.   ANIMAL COGNITION

Large quantity discrimination by North Island robins (Petroica longipes)

(2012) Alexis Garland et al.   ANIMAL COGNITION

Evidence for Two Numerical Systems That Are Similar in Humans and Guppies

(2012) Christian Agrillo et al.   PLoS One

Crows cross-modally recognize group members but not non-group members

(2012) N. Kondo et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Cross-modal individual recognition in domestic horses (Equus caballus) extends to familiar humans

(2012) L. Proops et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Displacement behaviour regulates the experience of stress in men

(2012) Changiz Mohiyeddini et al.   STRESS-THE INTERNATIONAL JOURNAL ON THE BIOLOGY OF STRESS

Quantity discrimination in jungle crows, Corvus macrorhynchos

(2011) Bezawork Afework Bogale et al.   ANIMAL BEHAVIOUR

Numerical assessment and individual call discrimination by wild spotted hyaenas, Crocuta crocuta

(2011) Sarah Benson-Amram et al.   ANIMAL BEHAVIOUR

Ecological and social factors affect the occurrence and outcomes of intergroup encounters in chimpanzees

(2011) Michael L. Wilson et al.   ANIMAL BEHAVIOUR

Relative quantity judgments in South American sea lions (Otaria flavescens)

(2011) José Z. Abramson et al.   ANIMAL COGNITION

Spontaneous discrimination of small quantities: shoaling preferences in angelfish (Pterophyllum scalare)

(2011) Luis M. Gómez-Laplaza et al.   ANIMAL COGNITION

Tracking of food quantity by coyotes (Canis latrans)

(2011) Joseph M. Baker et al.   BEHAVIOURAL PROCESSES

Contact with Human Facilities Appears to Enhance Technical Skills in Wild Vervet Monkeys (Chlorocebus aethiops)

(2011) Erica van de Waal et al.   FOLIA PRIMATOLOGICA

Spontaneous voice-face identity matching by rhesus monkeys for familiar conspecifics and humans

(2011) J. Sliwa et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Can angelfish (Pterophyllum scalare) count? Discrimination between different shoal sizes follows Weber’s law

(2010) Luis M. Gómez-Laplaza et al.   ANIMAL COGNITION

Free-ranging dogs assess the quantity of opponents in intergroup conflicts

(2010) Roberto Bonanni et al.   ANIMAL COGNITION

Is it only humans that count from left to right?

(2010) R. Rugani et al.   Biology Letters

Evidence for Conceptual Quantitative Abilities in the African Grey Parrot: Labeling of Cardinal Sets

(2010) Irene M. Pepperberg   ETHOLOGY

Territorial Behaviour by a Clan of Spotted Hyaenas Crocuta crocuta

(2010) Johannes R. Henschel et al.   ETHOLOGY

Quantity discrimination in salamanders

(2010) P. Krusche et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

Ontogeny of Numerical Abilities in Fish

(2010) Angelo Bisazza et al.   PLoS One

Effects of personality on territory defence in communication networks: a playback experiment with radio-tagged great tits

(2010) M. Amy et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

The information content of giant panda, Ailuropoda melanoleuca, bleats: acoustic cues to sex, age and size

(2009) Benjamin D. Charlton et al.   ANIMAL BEHAVIOUR

Wild chimpanzees (Pan troglodytes schweinfurthii) distinguish between different scream types: evidence from a playback study

(2009) Katie Elizabeth Slocombe et al.   ANIMAL COGNITION

Quantity discrimination in Tenebrio molitor: evidence of numerosity discrimination in an invertebrate?

(2009) P. Carazo et al.   ANIMAL COGNITION

Horses (Equus caballus) select the greater of two quantities in small numerical contrasts

(2009) Claudia Uller et al.   ANIMAL COGNITION

Context-Related Variation in the Vocal Growling Behaviour of the Domestic Dog (Canis familiaris)

(2009) Anna M. Taylor et al.   ETHOLOGY

Seeing who we hear and hearing who we see

(2009) Robert M. Seyfarth et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Arithmetic in newborn chicks

(2009) R. Rugani et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Perception of food amounts by chimpanzees based on the number, size, contour length and visibility of items

(2008) Michael J. Beran et al.   ANIMAL BEHAVIOUR

Do fish count? Spontaneous discrimination of quantity in female mosquitofish

(2008) Christian Agrillo et al.   ANIMAL COGNITION

Quantity discrimination in felines: a preliminary investigation of the domestic cat (Felis silvestris catus)

(2008) Paola Etel Pisa et al.   JOURNAL OF ETHOLOGY

Monkeys (Macaca mulatta and Cebus apella) track, enumerate, and compare multiple sets of moving items.

(2008) Michael J. Beran   JOURNAL OF EXPERIMENTAL PSYCHOLOGY-ANIMAL LEARNING AND COGNITION

Cross-modal individual recognition in domestic horses (Equus caballus)

(2008) Leanne Proops et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Interaction location outweighs the competitive advantage of numerical superiority in Cebus capucinus intergroup contests

(2008) M. C. Crofoot et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Acoustic territorial signalling in a small, socially monogamous canid

(2007) Safi K. Darden et al.   ANIMAL BEHAVIOUR