OOIR: Observatory of International Research

Papers

(The TQCC of Animal Cognition is 7. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-06-01 to 2025-06-01.)

Article	Citations
Spaced training enhances equine learning performance	43
“Cognition in marine mammals: the strength of flexibility in adapting to marine life”	38
Seasonal changes in problem-solving in wild African striped mice	23
Planning actions with a magnetic tool: how initial tool orientation and number of functional ends influence motor planning abilities in capuchin monkeys (Sapajus spp.)	21
Correction to: If horses had toes: demonstrating mirror self recognition at group level in Equus caballus	19
House sparrows use learned information selectively based on whether reward is hidden or visible	19
Does owner handedness influence paw preference in dogs?	18
Nest sanitation as an effective defence against brood parasitism	18
Disentangling help-seeking and giving up: differential human-directed gazing by dogs in a modified unsolvable task paradigm	18
Pet dogs (Canis familiaris) re-engage humans after joint activity	18
Thinking about order: a review of common processing of magnitude and learned orders in animals	17
Assessment of predation risk through conspecific cues by anuran larvae	17
Cognitive flexibility in a Tanganyikan bower-building cichlid, Aulonocranus dewindti	16
Life is in motion (through a chick’s eye)	16
Learning to anticipate mate presence shapes individual sex roles in the hermaphroditic pond snail, Lymnaea stagnalis	16
Mutual mother–pup vocal recognition in the highly colonial Cape fur seal: evidence of discrimination of calls with a high acoustic similarity	15
Injury shortens life expectancy in ants and affects some risk-related decisions of workers	15
Sex differences in social buffering and social contagion of alarm responses in zebrafish	14
Horses discriminate between human facial and vocal expressions of sadness and joy	14
Grouping rule in tadpole: is quantity more or size assortment more important?	14
Spot the odd one out: do snake pictures capture macaques’ attention more than other predators?	14
Learning and organization of within-session sequences by pigeons (Columba livia)	14
Domestic cats (Felis catus) prefer freely available food over food that requires effort	13
Lessons learned in animal acoustic cognition through comparisons with humans	13
On being a Hydra with, and without, a nervous system: what do neurons add?	13

Both age and experience are important for successful problem solving in juvenile fawn-footed mosaic-tailed rats Melomys cervinipes	13
A new protocol for investigating visual two-choice discrimination learning in lizards	12
A promising novel judgement bias test to evaluate affective states in dogs (Canis familiaris)	11
What drives horse success at following human-given cues? An investigation of handler familiarity and living conditions	11
A comparative study of mirror self-recognition in three corvid species	11
Decision making under risk: framing effects in pigeon risk preferences	11
The PROUST hypothesis: the embodiment of olfactory cognition	11
Cognitive control of song production by humpback whales	11
Context specificity of latent inhibition in the snail Cornu aspersum	10
Penguins perceive variations of source- and filter-related vocal parameters of species-specific vocalisations	10
Impact of exploration behavior, aptitude for pellet consumption, and the predation practice on the performance in consecutive live prey foraging tests in a piscivorous species	10
Behavioral laterality is correlated with problem-solving performance in a songbird	10
Impact of environmental complexity and stocking density on affective states of rainbow trout (Oncorhynchus mykiss)	10
Changes in the anxiety-like and fearful behavior of shrimp following daily threatening experiences	10
Searching high and low: domestic dogs’ understanding of solidity	10
Left or right, that is the question: use of egocentric frame of reference and the right-eye advantage for understanding gestural signs in bottlenose dolphins (Tursiops truncatus)	10
Smart sharks: a review of chondrichthyan cognition	10
Incrementing non-matching- but not matching-to-sample is rapidly learned in an automated version of the odor span task	10
Quantitative abilities of invertebrates: a methodological review	10
Cue polarization and representation in mouse home base behaviors	9
Host parent responses to heterospecific parasite nestling alarm calls are independent of past and current experience with experimental brood parasitism	9
Overlooked evidence for semantic compositionality and signal reduction in wild chimpanzees (Pan troglodytes)	9
Context-dependent use of olfactory cues by foragers of Vespula germanica social wasps	9
Evidence of successive negative contrast in terrestrial toads (Rhinella arenarum): central or peripheral effect?	9
Orientation by environmental geometry and feature cues in the green and black poison frog (Dendrobates auratus)	9
Testing use of the first multi-partner cognitive enrichment devices by a group of male bottlenose dolphins	9
Can rats and ants exchange information between the horizontal and vertical domains?	9
Novel object recognition in Octopus maya	8
Nest box entrance hole size can influence nest site selection and nest defence behaviour in Japanese tits	8
Plasticity for the kin and conspecific preferences in the frog tadpoles (Rana ornativentris)	8
After 150 years of watching: is there a need for synthetic ethology?	8
Volumetric and connectivity assessment of the caudate nucleus in California sea lions and coyotes	8
Basal cognition: shifting the center of gravity (again)	8
Emulative learning of a two-step task in free-ranging domestic pigs	8
Wild skuas can use acoustic cues to locate hidden food	8
Visual perception of emotion cues in dogs: a critical review of methodologies	8
Intra- and interspecific variation in self-control capacities of parrots in a delay of gratification task	8
Individual recognition and long-term memory of inanimate interactive agents and humans in dogs	8
Tolerant macaque species are less impulsive and reactive	8
Performance on inhibitory tasks does not relate to handedness in several small groups of Callitrichids	8
The deterrent effects of individual monoterpene odours on the dietary decisions of African elephants	8
Varieties of visual navigation in insects	8
An exploratory analysis of head-tilting in dogs	8
Are you better than me? Social comparisons in carrion crows (Corvus corone)	8
African jewel fish (Hemichromis bimaculatus) distinguish individual faces based on their unique iridophore patterns	8
Gender differences in animal cognition science	7
Behavioural synchronization and social referencing of dogs and humans: walking in dyad vs in group	7
Mirror self-recognition in gorillas (Gorilla gorilla gorilla): a review and evaluation of mark test replications and variants	7
Odor-based mate choice copying in deer mice is not affected by familiarity or kinship	7
Cognition of the manatee: past research and future developments	7

Slowly walking down to the more food: relative quantity discrimination in African spurred tortoises (Centrochelys sulcata)	7
First record of geophagy in Jungle Babbler (Turdoides striata) prior to egg-laying: an instinct for calcium supplement	7
Effects of early noise exposure on hippocampal-dependent behaviors during adolescence in male rats: influence of different housing conditions	7
Social experience drives the development of holistic face processing in paper wasps	7
Count-based decision-making in mice: numerosity vs. stimulus control	7
Domestication effects on social information transfer in chickens	7
Puppies in the problem-solving paradigm: quick males and social females	7
Repeated testing does not confound cognitive performance in the Western Australian magpie (Cracticus tibicen dorsalis)	7
Bold and bright: shy and supple? The effect of habitat type on personality–cognition covariance in the Aegean wall lizard (Podarcis erhardii)	7
Juvenile vervet monkeys rely on others when responding to danger	7
Quantity discrimination by kittens of the domestic cat (Felis silvestris catus)	7
Visual categories and concepts in the avian brain	7
Through the eyes of a hunter: assessing perception and exclusion performance in ground-hornbills	7