I know a dog when I see one: dogs (Canis familiaris) recognize dogs from videos

Mongillo, Paolo; Eatherington, Carla Jade; Lõoke, Miina; Marinelli, Lieta

doi:10.1007/s10071-021-01470-y

Cited by 11 publications

(7 citation statements)

References 35 publications

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“…Because the physical features of faces may not be as important to conspecific communication in domestic dogs as they are for group-living/hunting wolves and non-human primates [30,34]-see Gergely et al [50] and Mongillo et al [51]-it is reasonable to assume that dogs of any breed/mix would behaviorally overcome any natural and/or…”

Section: Discussionmentioning

confidence: 99%

What Is Written on a Dog’s Face? Evaluating the Impact of Facial Phenotypes on Communication between Humans and Canines

Sexton,

Buckley,

Lieberfarb

et al. 2023

Animals

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Facial phenotypes are significant in communication with conspecifics among social primates. Less is understood about the impact of such markers in heterospecific encounters. Through behavioral and physical phenotype analyses of domesticated dogs living in human households, this study aims to evaluate the potential impact of superficial facial markings on dogs’ production of human-directed facial expressions. That is, this study explores how facial markings, such as eyebrows, patches, and widow’s peaks, are related to expressivity toward humans. We used the Dog Facial Action Coding System (DogFACS) as an objective measure of expressivity, and we developed an original schematic for a standardized coding of facial patterns and coloration on a sample of more than 100 male and female dogs (N = 103), aged from 6 months to 12 years, representing eight breed groups. The present study found a statistically significant, though weak, correlation between expression rate and facial complexity, with dogs with plainer faces tending to be more expressive (r = −0.326, p ≤ 0.001). Interestingly, for adult dogs, human companions characterized dogs’ rates of facial expressivity with more accuracy for dogs with plainer faces. Especially relevant to interspecies communication and cooperation, within-subject analyses revealed that dogs’ muscle movements were distributed more evenly across their facial regions in a highly social test condition compared to conditions in which they received ambiguous cues from their owners. On the whole, this study provides an original evaluation of how facial features may impact communication in human–dog interactions.

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Section: Discussionmentioning

confidence: 99%

What Is Written on a Dog’s Face? Evaluating the Impact of Facial Phenotypes on Communication between Humans and Canines

Sexton,

Buckley,

Lieberfarb

et al. 2023

Animals

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“…4 -E). Similarly, EV has been used in dogs to test cross-modal recognition of owner identification (Adachi et al 2007 ) and other dogs as a species (Mongillo et al 2021 ), but not yet for emotion cues (but see (Nakamura et al 2018 ) for EV used with horses for successful emotion cues recognition). EV studies repeatedly present one stimulus followed by a second stimulus (e.g., congruent or incongruent image) and then compare looking times between conditions.…”

Section: What Methodologies Have Been Used To Assess the Perception O...mentioning

confidence: 99%

Visual perception of emotion cues in dogs: a critical review of methodologies

2023

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Comparative studies of human–dog cognition have grown exponentially since the 2000’s, but the focus on how dogs look at us (as well as other dogs) as social partners is a more recent phenomenon despite its importance to human–dog interactions. Here, we briefly summarise the current state of research in visual perception of emotion cues in dogs and why this area is important; we then critically review its most commonly used methods, by discussing conceptual and methodological challenges and associated limitations in depth; finally, we suggest some possible solutions and recommend best practice for future research. Typically, most studies in this field have concentrated on facial emotional cues, with full body information rarely considered. There are many challenges in the way studies are conceptually designed (e.g., use of non-naturalistic stimuli) and the way researchers incorporate biases (e.g., anthropomorphism) into experimental designs, which may lead to problematic conclusions. However, technological and scientific advances offer the opportunity to gather much more valid, objective, and systematic data in this rapidly expanding field of study. Solving conceptual and methodological challenges in the field of emotion perception research in dogs will not only be beneficial in improving research in dog–human interactions, but also within the comparative psychology area, in which dogs are an important model species to study evolutionary processes.

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“…Taken together, the results of the studies on dogs' ability to generalize across two-and three-dimensional stimuli suggest that researchers should be cautious when assuming an equivalence between these two types of stimuli, especially when presenting dogs with static, novel pictures of inanimate objects. But there is no reason to be too pessimistic, because studies using cross-modal matching suggest that dogs have expectations about the vocalization a depicted dog or human should produce, on the basis of its species or emotional facial expression (Albuquerque et al, 2016;Gergely et al, 2019;Mongillo et al, 2021). Moreover, on the basis of two-dimensional information alone, dogs seem capable of recognizing different (dog and human) individuals (Racca et al, 2010), including discriminating their owner from a familiar or an unknown person (Adachi et al, 2007;Huber et al, 2013;Karl, Boch, Zamansky, et al, 2020) and prefer conspecific heads over human ones (Somppi et al, 2014).…”

Section: Artificial Stimulimentioning

confidence: 99%

Eye Tracking in Dogs: Achievements and Challenges

Huber¹,

Lonardo²,

Völter³

2023

CCBR

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In this article, we review eye-tracking studies with dogs (Canis familiaris) with a threefold goal; we highlight the achievements in the field of canine perception and cognition using eye tracking, then discuss the challenges that arise in the application of a technology that has been developed in human psychophysics, and finally propose new avenues in dog eye-tracking research. For the first goal, we present studies that investigated dogs' perception of humans, mainly faces, but also hands, gaze, emotions, communicative signals, goal-directed movements, and social interactions, as well as the perception of animations representing possible and impossible physical processes and animacy cues. We then discuss the present challenges of eye tracking with dogs, like doubtful picture-object equivalence, extensive training, small sample sizes, difficult calibration, and artificial stimuli and settings. We suggest possible improvements and solutions for these problems in order to achieve better stimulus and data quality. Finally, we propose the use of dynamic stimuli, pupillometry, arrival time analyses, mobile eye tracking, and combinations with behavioral and neuroimaging methods to further advance canine research and open up new scientific fields in this highly dynamic branch of comparative cognition.

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I know a dog when I see one: dogs (Canis familiaris) recognize dogs from videos

Cited by 11 publications

References 35 publications

What Is Written on a Dog’s Face? Evaluating the Impact of Facial Phenotypes on Communication between Humans and Canines

What Is Written on a Dog’s Face? Evaluating the Impact of Facial Phenotypes on Communication between Humans and Canines

Visual perception of emotion cues in dogs: a critical review of methodologies

Eye Tracking in Dogs: Achievements and Challenges

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