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Animal Sciences

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Articles 61 - 90 of 417

Full-Text Articles in Cognition and Perception

Bottlenose Dolphin (Tursiops Truncatus) Vocal Responses To Sonar And Spectrally Pink Background Noise, Maria Zapetis May 2019

Bottlenose Dolphin (Tursiops Truncatus) Vocal Responses To Sonar And Spectrally Pink Background Noise, Maria Zapetis

Dissertations

As human populations rise, the level of man-made noise increases globally. Naval sonar and boat traffic are underwater sound sources of particular concern to marine mammal welfare. To better understand the impact of these noise increases on cetaceans, studies can explore animals’ behavioral changes in response to noise. Studies have investigated the ‘dose-response’ relationship between the received sound pressure level of sonar signals and the behavior of cetaceans in the wild, but exposure studies in controlled environments are limited. The studies in this dissertation examined bottlenose dolphin vocal modifications during various experimental noise treatments. Acoustic recordings previously obtained for bottlenose …


Domestication And Cognitive Complexity, David R. Brodbeck, Madeleine I. R. Brodbeck, Keeghan Rosso Jan 2019

Domestication And Cognitive Complexity, David R. Brodbeck, Madeleine I. R. Brodbeck, Keeghan Rosso

Animal Sentience

Marino and Merskin (2019) list a number of tasks that sheep can perform well. As comparative psychologists, we are not surprised by these results. Indeed, many domesticated animal species show similar abilities.


Just Policy Paralysis?, Clare Palmer, Bob Fischer Jan 2019

Just Policy Paralysis?, Clare Palmer, Bob Fischer

Animal Sentience

Treves et al. (2019) argue that policy making should include the interests and well-being of present and future generations of humans and nonhumans. There are deep and abiding conflicts of interest both between and within these groups. Trying to factor in so many considerations is likely to generate political gridlock. The authors need to explain how to avoid this.


Guilty As Charged, Sergio M. Pellis Jan 2019

Guilty As Charged, Sergio M. Pellis

Animal Sentience

Sheep have had a bad rap with regard to their behavioral capabilities, and to a large extent, that negative view of sheep has arisen from our failure as human observers to view the world from the perspective of the sheep themselves. Studies sensitive to what sheep identify as of value in the world have revealed a different picture: sheep have cognitive, emotional and social complexity beyond our crude stereotype. Clearly, what we need to do is to evaluate non-human animals on their own terms and not as a reflection of ourselves.


The Perfecting Of The Octopus, Ila France Porcher Jan 2019

The Perfecting Of The Octopus, Ila France Porcher

Animal Sentience

Cephalopods split away from the phylogenetic tree about half a billion years ago, and octopus evolution has been accelerated by an extremely low survival rate. This helps explain why this unusual animal presents qualities found in no other. It has a radially organized nervous system with a processing centre for each of its eight tentacles. Yet, although this might suggest that each tentacle has its own centre of consciousness, it remains just one animal, with one mouth to feed, and one life to lose, and it behaves as if it is centrally controlled. Its capacity for a range of intelligent …


The Ingenuity Of Cephalopods, Angel Guerra Jan 2019

The Ingenuity Of Cephalopods, Angel Guerra

Animal Sentience

I present a brief overview of the richness of cephalopod behavioral, neural and cognitive traits.


The Octopus: A Beautiful (But Disorganized) “Mind”, Jon Mallatt Jan 2019

The Octopus: A Beautiful (But Disorganized) “Mind”, Jon Mallatt

Animal Sentience

Mather (2019) presents convincing evidence that octopuses have minds, but in the first 85% of the target article, the evidence does not come through very clearly because it is hidden by other information and by problems with the paper’s organization. I propose ways to build a tighter argument in the author’s Response to the Commentaries.


Reconciling Just Preservation, Shelley M. Alexander Jan 2019

Reconciling Just Preservation, Shelley M. Alexander

Animal Sentience

Treves et al.’s target article can play an important role in reconciling the needs of future generations and non-human animals in conservation. Human capacities are adequate for interpreting and defining many non-human animal needs. Worldviews are more complex, however, and conservation science, like the target article itself, suffers from a lack of diversity and inclusiveness. This may pose practical impediments to realizing just preservation.


Applied Cognition Research To Improve Sheep Welfare, Kristina Horback Jan 2019

Applied Cognition Research To Improve Sheep Welfare, Kristina Horback

Animal Sentience

If a change is going to occur in the care and management of domestic sheep, there needs to be a collaborative effort across many disciplines. This review by Marino & Merskin of the literature on cognitive processing in domestic sheep is limited by the inherent bias of the authors, including the impracticable goal of eliminating sheep production. Animal welfare concerns about the management of commercial sheep are valid; however, in order to make a difference, we need to develop an application for this knowledge about cognitive abilities in sheep.


Debunking Human Prejudice And Blindness, Peter J. Li Jan 2019

Debunking Human Prejudice And Blindness, Peter J. Li

Animal Sentience

Human prejudice and blindness to animal suffering are shocking. Despite their differences in culture, politics, and religious beliefs, humans have one thing in common. They see nonhuman animals as inferior and have since time immemorial assumed a dominant position in an asymmetrical human-animal relationship. When it comes to human-animal relations, there is no “clash of civilizations.” Human prejudice and blindness are predicated on “common sense assumptions” about the natural world and nonhuman animals in particular. Marino & Merskin’s review is part of the growing effort to debunk the assumptions that have shaped human actions so as to end the injustice …


Farm Animals Are Not Humans In Sheep Clothing, Lorenz Gygax, Christian Nawroth Jan 2019

Farm Animals Are Not Humans In Sheep Clothing, Lorenz Gygax, Christian Nawroth

Animal Sentience

Research on the mental lives of farm animals is crucial to assess not only their physical but also their psychological wellbeing. Their current housing and handling practices are highly unlikely to meet their cognitive needs and demands, but our knowledge of their mental capacities is still limited. Although folk wisdom often refers to farm animals as dull and inflexible, recent studies show they have a rich interpretation of their environment and can solve complex problems. Yet an uncritical and anthropomorphic assessment of farm animal cognition and behaviour may lead to the attribution of an exaggerated amount of cognitive flexibility. Contrary …


What Every Shepherd Knows, Marthe Kiley-Worthington Jan 2019

What Every Shepherd Knows, Marthe Kiley-Worthington

Animal Sentience

The findings of the research reviewed by Marino & Merskin have been common knowledge to shepherds for millennia. Many of them are also evolutionary necessities for all mammals, especially social ones.


The Intelligence Of Sheep, David Gamez Jan 2019

The Intelligence Of Sheep, David Gamez

Animal Sentience

This commentary suggests how recent theories about the predictive brain could help us understand the evidence put forward by Marino & Merskin for intelligence in sheep. I contrast predictive intelligence in sheep with automatic behaviors that do not require intelligence, and I consider the flexibility of sheep intelligence.


The Importance Of Research Applicability, Krista Mclennan Jan 2019

The Importance Of Research Applicability, Krista Mclennan

Animal Sentience

Marino & Merskin’s (2019) review contains key information about the complexity of sheep and their intelligence level, but lacks practical application. The key to making any long-term changes to sheep welfare at an industry level is by generating research that is practically relevant to the sector. The practical application of research should be considered at the design stage and in consultation with producers. Additionally, thought needs to be given to how the practical application of the research will be transferred to those people directly involved in animal care (e.g., producers, stockpersons, etc.). Focusing on the practical relevance and application of …


The Problem Is Not Discourses Of Production; It Is Production Itself, Sean Hermanson Jan 2019

The Problem Is Not Discourses Of Production; It Is Production Itself, Sean Hermanson

Animal Sentience

The mistreatment of sheep is not because of fables, stereotypes, unconscious cultural paradigms, our collective consciousness, anthropocentricism, human arrogance, or our drive to dominate. Nonetheless, protections for sheep used in research and agriculture ought to be strengthened.


Cognitive Dissonance About Sheep Cognition And Consumption, Catia Correia Caeiro Jan 2019

Cognitive Dissonance About Sheep Cognition And Consumption, Catia Correia Caeiro

Animal Sentience

Sheep are perceived as mere resources under the massive demand of the food and wool industry. Evidence that sheep cognition is comparable to that of other species may inspire reflection on sheep consumption. Dogs may be a promising comparison species.


Social Cognition In Sheep: Welfare Implications, Keith M. Kendrick Jan 2019

Social Cognition In Sheep: Welfare Implications, Keith M. Kendrick

Animal Sentience

More research has been carried out on social cognition in sheep than in other farm animal species. Although this has often been featured widely in the media, there is still limited public awareness of it. Marino & Merskin’s review is therefore both important and timely. In my commentary, I focus primarily on what has been established about the complexity of sheep social cognition, at the level of both brain and behavior, and on some of these findings for sheep welfare.


Animal Sentience Is Not Enough To Motivate Conservation, Irene M. Pepperberg Jan 2019

Animal Sentience Is Not Enough To Motivate Conservation, Irene M. Pepperberg

Animal Sentience

Chapman & Huffman suggest that humans’ views of their own superiority are a source of their callousness toward the environment. I do not disagree but point to a number of other issues that must be addressed for conservation efforts to succeed.


Anthropocentrism: Practical Remedies Needed, Helen Kopnina Jan 2019

Anthropocentrism: Practical Remedies Needed, Helen Kopnina

Animal Sentience

It is true that one of the harmful consequences of creating categories where one group is unique and superior to others is that it justifies discriminating against the inferior groups. And outright abuse of nonhuman animals is indeed morally unjustifiable. But what is to be done about it?


Our Brains Make Us Out To Be Unique In Ways We Are Not, Matthew J. Criscione, Julian Paul Keenan Jan 2019

Our Brains Make Us Out To Be Unique In Ways We Are Not, Matthew J. Criscione, Julian Paul Keenan

Animal Sentience

Humans have long viewed themselves in a favorable light. This bias is consistent with a general pattern of self-enhancement. Neural systems in the medial prefrontal cortex underlie this way of thinking, which, even when false, may be beneficial for survival. It is hence not surprising that we often disregard contrary evidence in believing ourselves superior.


Why Cod Don't Like To Sunbathe: Quantity And Quality In The Animal Kingdom, Christoph Jung Jan 2019

Why Cod Don't Like To Sunbathe: Quantity And Quality In The Animal Kingdom, Christoph Jung

Animal Sentience

The difference between a cod and a lizard is not just a quantitative one. The recognition of qualitative differences between species does not imply a moral ranking. Our species’ special abilities to shape the earth mean we have a special responsibility for ensuring a liveable future for all organisms, human and non-human.


Mobilizing Heads And Hearts For Wildlife Conservation, Valérie A. M. Schoof, Simon L'Allier Jan 2019

Mobilizing Heads And Hearts For Wildlife Conservation, Valérie A. M. Schoof, Simon L'Allier

Animal Sentience

Highlighting the shared evolutionary relationships between humans and animals — and recognizing that all species, including humans, are unique in their own way — may facilitate caring for and conserving animals by tapping into a human emotion: empathy.


Intelligence, Complexity, And Individuality In Sheep, Lori Marino, Debra Merskin Jan 2019

Intelligence, Complexity, And Individuality In Sheep, Lori Marino, Debra Merskin

Animal Sentience

Domestic sheep (Ovis aries) are among the earliest animals domesticated for human use. They are consumed worldwide as mutton, hogget, and lamb, kept as wool and milk producers, and used extensively in scientific research. The popular stereotype is that sheep are docile, passive, unintelligent, and timid, but a review of the research on their behavior, affect, cognition, and personality reveals that they are complex, individualistic, and social.


Sacrificial Lambs, Clive Phillips Jan 2019

Sacrificial Lambs, Clive Phillips

Animal Sentience

Sheep evolved from the mouflon as mountain animals, able to escape predation by leaping between rock ledges. Their defense was their agility. Humans brought them to the plains, where the agility was less useful, but their lack of aggression, speed or weaponry against predators made them a prime target to become one of man’s meat providers. A perfect animal in many ways, with extraordinary perceptive powers and some remarkable cognitive skills, they are often treated with complete disregard for their welfare. Yet sheep themselves won’t tell us this, for a sheep that alerted others to its weakness really would be …


Pulling The Wool From Our Eyes, Jennifer Vonk Jan 2019

Pulling The Wool From Our Eyes, Jennifer Vonk

Animal Sentience

Marino & Merskin review evidence of the complexity of sheep cognition, concluding that researchers ought to feel sheepish about misrepresenting ovine cognitive capacities. However, the failure to situate the data in critical context risks pulling the wool over readers’ eyes.


Is Knowing Enough To Change Human Attitudes And Actions?, Liv Baker Jan 2019

Is Knowing Enough To Change Human Attitudes And Actions?, Liv Baker

Animal Sentience

Marino & Merskin present evidence on key aspects of cognition, such as theory of mind, learning, emotional valence, and sociality, to make a convincing argument that sheep are due consideration as individual sentient beings. With this information, what will it take to produce a real, meaningful shift in our attitudes and actions towards other animals, including a species as disadvantaged as sheep? What else do we need to know?


Reflections On Sheep Rearing, Joyce D'Silva Jan 2019

Reflections On Sheep Rearing, Joyce D'Silva

Animal Sentience

Sheep rearing has an incredibly long history. Sometimes this alone can give credibility and status to a human practice. In the twenty-first century, it may be time to reassess our treatment of sheep and their place in nature. “Just because we’ve always done it” no longer has validity by itself. There are many other human practices which used to be accepted widely in certain societies and which we now may find abhorrent. With sheep intelligence now rightly regarded as an acceptable area of research within the academic community, it is a good time to reflect on our treatment of these …


Casting A Sheep’S Eye On Science, David M. Peña-Guzmán Jan 2019

Casting A Sheep’S Eye On Science, David M. Peña-Guzmán

Animal Sentience

Marino & Merskin review evidence that sheep are not just passive and reactive creatures. They have personalities that vary from individual to individual and endure over time. It follows that we must rethink what it means to study them scientifically.


Far More To Sheep Than Meets The Casual Eye, Bernard Rollin Jan 2019

Far More To Sheep Than Meets The Casual Eye, Bernard Rollin

Animal Sentience

Marino & Merskin’s survey of the cognitive and social capacities of sheep is an eye-opener about the individuality and emotionality of this most maligned of all farm animals. My own eyes had already been opened by an adopted orphaned lamb, so much more like a dog as a companion animal than the mindless robot I had been conditioned to expect. I am morally certain that Marino & Merskin’s survey will have a similar effect on readers open to changing their minds.


Sentient Animals Do Not Just Live In The Present, John Webster Jan 2019

Sentient Animals Do Not Just Live In The Present, John Webster

Animal Sentience

Sheep are particularly well-equipped with the cognitive and emotional skills appropriate to their phenotype and natural environment. These include spatial memory, the benefits of safety in numbers, and the ability to recognise special individuals in large flocks by sight and by sound. Marino & Merskin’s target article reviews convincing evidence on whether sheep are more or less clever than other mammalian species. Sheep are very good at being sheep. But sentient animals do not just live in the present. Their emotional state is not simply dictated by events of the moment. If they learn, they can cope; if not, they …