Animal Studies Commons^™

Visual Illusion Susceptibility In Dogs Using The Ebbinghaus-Titchener Illusion In A Spontaneous Choice Task, Nicolette Becker

Theses and Dissertations

In recent years, dogs have been a popular test subject when studying visual illusion susceptibility. Multiple studies have investigated whether animals perceive illusions as humans do, but few studies have evaluated dogs’ perception of illusory stimuli. In this thesis, we studied if dogs are visually susceptible to the Ebbinghaus-Titchener illusion when presented in a spontaneous choice task. Subjects were presented two visual images on a board, which had bologna pieces embedded in the stimuli. In control trials, two different sized bologna pieces were placed in the center of the images. In these control conditions, dogs were expected to choose the …

Commmunity, Ecology, And Modernity: Faunal Analysis Of Skútustaðir In Mývatnssveit, Northern Iceland, Megan Hicks

Dissertations, Theses, and Capstone Projects

This dissertation examines the archaeofaunal remains from Skútustaðir, a middle to high-status farm in Mývatnssveit, Northern Iceland, to understand the experience of rural communities and their ecologies during Iceland’s transition from regulated colonial exchange to a capitalist economy during the 17^th through 19^th centuries. Archaeofaunal analysis is used to reconstruct changes in the ways that people herded, hunted, and fished, providing insights into how they managed their local environments for subsistence and novel contexts of exchange. In addition to archaeofaunal analysis, primary textual sources are explored to assess how the Skútustaðir household and its rural community mobilized long-term …

Is Animal Suffering Really All That Matters? The Move From Suffering To Vegetarianism, Carlo Alvaro

Publications and Research

The animal liberation movement, among other goals, seeks an end to the use of animals for food. Philosophers who write against animal exploitation agree on the goal but differ in their approaches: Deontologists argue that rearing animals for food infringes animals’ inherent right to life. Utilitarians claim that discontinuing the use of animals for food will result in the maximization of utility. Virtue-oriented theorists argue that using animals for food is an unvirtuous practice. Despite their different approaches, arguments for vegetarianism or veganism have a common step. They move from the notion of suffering to the conclusion of vegetarianism or …

Is There Synergy Between Song Learning And Vocal Stimuli Discrimination Training?, Kenta Watanabe

Theses and Dissertations

Does auditory discrimination ability predict greater accuracy in imitating song? We investigated this question in zebra finch males by testing if the accuracy of vocal imitation of song syllables relates to auditory discrimination performance. The majority of birds improved on imitating their discriminated syllable pairs over non-discriminated syllable sets.

Contagious Yawning In The Domestic Cat (Felis Catus), Ariel M. Lombardo Aghishian

Theses and Dissertations

This study investigates contagious yawning in domestic cats towards their owners, looking at potential links with empathy. Results showed no significant difference in yawning between conditions. The solitary nature of wildcats and their shared ancestor, and the unique social behavior in domesticated cats may explain these findings.

Link Link Circus, Isabella Rossellini

Theses and Dissertations

Link Link Circus is a theatrical script that presents historical, philosophical and scientific perspectives on the evolutionary, cognitive, behavioral and communicative links between humans and other animals. On stage two actors and a trained dog address the core question “Can animals think and feel?“

Observation Of Visitors At A Chimpanzee (Pan Troglodytes Schweinfurthii) Ecotourism Site Reveals Opportunity For Multiple Modes Of Pathogen Transmission, Darcey Glasser

Theses and Dissertations

Chimpanzee (Pan troglodytes) tracking is a popular ecotourism activity across Sub-Saharan Africa, offering visitors a personal wildlife experience. However, chimpanzee ecotourism may increase the risk of disease transmission between chimpanzees and people. This study assessed how tourist behaviors might facilitate cross-species disease transmission in Kibale National Park, Uganda.

Stabilizing Forces In Acoustic Cultural Evolution: Comparing Humans And Birds, Daniel C. Mann

Dissertations, Theses, and Capstone Projects

Learned acoustic communication systems, like birdsong and spoken human language, can be described from two seemingly contradictory perspectives. On one hand, learned acoustic communication systems can be remarkably consistent. Substantive and descriptive generalizations can be made which hold for a majority of populations within a species. On the other hand, learned acoustic communication systems are often highly variable. The degree of variation is often so great that few, if any, substantive generalizations hold for all populations in a species.

Within my dissertation, I explore the interplay of variation and uniformity in three vocal learning species: budgerigars (Melopsittacus undulatus), …

The Use Of Trazodone Hydrochloride To Reduce Stress In Dogs During The Transition Period Into A Municipal Animal Shelter: Impact On Incidence Of Illness, Length Of Stay, And Outcome, Jennifer L. Abrams

Theses and Dissertations

A large municipal animal shelter in NYC gave dogs low doses of trazodone hydrochloride at the time of intake to evaluate its efficacy in reducing transitional stress. Statistically significant decreases in illness rate and length of stay and increase in adoption rate were observed in the dogs given trazodone.

Object Permanence In Asian Elephants (Elephas Maximus), Dalia Miller

Theses and Dissertations

This study investigated object permanence in Asian elephants (Elephas maximus) using visible and invisible test paradigms with single and multiple object displacements. Elephants were predicted to succeed, demonstrating a capacity for object permanence and for using vision in a cognitive task. Study outcomes supported these predictions.

Dolphins In Space: Quantifying The Relative Positions Of Bottlenose Dolphins (Tursiops Truncatus), Megan S. Mcgrath

Theses and Dissertations

Bottlenose dolphins (Tursiops truncatus) are socially sophisticated mammals with high fission-fusion dynamics and complex communication. The relative positioning of individual dolphins as they swim within their social group may aid in the expression of social roles. This study sought to quantify relative positioning in a small social group of female bottlenose dolphins at the National Aquarium in Baltimore that included two mother-daughter pairs, maternal and paternal half-sisters, a half-aunt and niece, and one unrelated female. We devised a method for scoring relative positioning in three dimensions. We found that the two mothers and their juvenile and adult daughters …

Allomaternal Care By Conspecifics Impacts Activity Budgets Of Colobus Guereza Mothers, Dominique L. Raboin

Theses and Dissertations

In primate societies, caring for infants involves nursing, protection, provisioning, and carrying - all energetically taxing states for mothers. The cost of holding and carrying clinging infants often constrains mothers from moving and traveling, potentially reducing their food and energy intake. Alternatively, when an infant is physically separated from their mother they are at risk of predation from birds of prey or other large mammals. This requires a high level of vigilance from mothers, often further deterring them from acquiring the food and energy that they need. Allomaternal care (AMC) is hypothesized to provide mothers with a way to safely …

An Investigation Of Vocal Learning Propensity In Zebra Finch (Taeniopygia Guttata), Tatsuya Hayashi

Theses and Dissertations

The investigator attempted to predict the vocal learning propensity from either family pedigree or early vocal babbling (subsong). Pedigree trees suggest the possibility that vocal learning ability may depend on family. We failed to predict vocal learning propensity from subsong, but suggested that subsong may influence vocal learning outcome.

Formalizing The Umwelt, Rohit J. Parikh

Publications and Research

In the early part of the XXth century, Jacob from Uexkuell introduced the notion of the Umwelt which is the personal world which animals and humans live in. It is understood that each of us has our own Umwelt. This paper is an attempt to understand the notion of Umwelt using tools from logic and decision theory.

Darkness As A Positive Reinforcer In Weakly Electric Fish, Amber Lea D. Kincaid

Theses and Dissertations

Darkness was used as a positive reinforcer in 14 Gnathonemus petersii fish in an object discrimination task. One subject showed a significant learning response. This study provides preliminary support for the use of darkness as positive reinforcement in weakly electric fish and presents potential areas of interest for future study.

Social Influences On Songbird Behavior: From Song Learning To Motion Coordination, Iva Ljubičić

Dissertations, Theses, and Capstone Projects

Social animals learn during development how to integrate successfully into their group. How do social interactions combine to maintain group cohesion? We first review how social environments can influence the development of vocal learners, such as songbirds and humans (Chapter 1). To bypass the complexity of natural social interactions and gain experimental control, we developed Virtual Social Environments, surrounding the bird with videos of manipulated playbacks. This way we were able to design sensory and social scenarios and test how social zebra finches adjust their behavior (Chapters 2 & 3). A serious challenge is that the color output of a …

How The Egg Rolls: A Morphological Analysis Of Egg Shape In The Context Of Displacement Dynamics, Ian R. Hays

Theses and Dissertations

Very little is known about how morphology effects the motion, stability and the resulting viability of avian eggs. The limited research that exists focuses on the pyriform or ‘pointed’ egg shapes found in the Alcidea family. This unusual shell form is thought to suppress displacement and prevents egg loss on the cliffside nesting habitat of the Uria genera. Unfortunately, these studies never isolated or quantify the specific morphological features (elongation, asymmetry and conicality) of these pyriform eggs, which limits their applicability to other taxa and hampers a robust proof of concept. We isolated each feature as a variable, produced models …

Posthumanist Animals In Art: France And Belgium, 1972-87, Arnaud Gerspacher

Dissertations, Theses, and Capstone Projects

This dissertation traces the changing role and increased importance of nonhuman animals in art of the 1970s and 80s. Focused largely on artists in France and Belgium, this period stands at the head of a wide-ranging re-conceptualization of animality that continues to unfold today. Pivotal moments in ecology (beginning with the 1972 United Nations Conference on the Human Environment in Stockholm), animal ethics and ethology (such as the Universal Declaration of Animal Rights proclaimed in 1978), and philosophy (specifically the biopolitical and deconstructive currents critiquing the centrality of the humanist subject), all converge as stress points along long held anthropocentric …

Roles Of Gabab, Muscarinic And Nicotinic Receptor Signaling In The Acquisition And Expression Of Fructose And Fat-Conditioned Flavor Preferences And Acquisition Of Quinine-Conditioned Flavor Avoidances In Rats, Francis M. Rotella

Dissertations, Theses, and Capstone Projects

In addition to increased intake of sweet solutions by mammals, learning, particularly classically-conditioned “Pavlovian-like” learning, also plays an important role. An orosensory conditioned flavor preference (CFP) can be elicited by pairing one novel flavor (conditioned stimulus, CS+) with a fructose solution and a second novel flavor (CS-) with a saccharin solution. Rats will prefer the CS+ flavor in a subsequent 2-bottle choice test with both flavors mixed in saccharin. Previous pharmacological analyses revealed that systemic administration of dopamine (DA) D1 and D2 as well as NMDA, but not opioid, receptor antagonists eliminated the acquisition (learning) of fructose-CFP. Further, expression of …

Effects Of Fluoxetine On Social And Startle Behavior In The African Cichlid Astatotilapia Burtoni, Stephanie Shih

Theses and Dissertations

The commonly prescribed antidepressant Prozac (fluoxetine) is found in waste water and affects aquatic animals. Here we ask how social hierarchy and startle behavior in an African cichlid fish community is impacted by chronic fluoxetine exposure. Results indicate reduced aggression and startle rates, implying possible ecological consequences.

Feline Object Play: The Influence Of Catnip, Keri Detorres

Theses and Dissertations

Catnip triggers a unique olfactory response and results in a play-like activity in felines. This invoked response appears similar to, but more exaggerated and intense, than regular play. The play behavior of 24 cats with two identical toys, one of which was infused with catnip, was compared.

Domestic Cat Ethology: Evaluating Social Media For Data Collection, Patricia Casey

Theses and Dissertations

This study looked at whether user-submitted videos of cats could be used to increase understanding of their behavior. The findings suggest that the behaviors observed were consistent with prior research, and contain typical cat behavior. Depending on the research question, user-submitted videos of cats are a promising data source.

Reward Preferences In Domestic Horses (Equus Caballus), Elizabeth E. Jaeger

Theses and Dissertations

The present study examined stress response in domestic horses (Equus caballus) to determine if horses show preference for either traditional or natural horsemanship training methods to test the hypothesis that natural horsemanship would induce less stress. Our results show that natural horsemanship rewards elicited lower stress response in horses.

Adult Human Perception Of Distress In The Cries Of Bonobo, Chimpanzee And Human Infants, Taylor Kelly

Theses and Dissertations

Adult human listeners rated their perceived distress based on the recorded vocalizations of bonobo, chimpanzee and human infants. Results found that bonobos were rated highest, chimpanzee and human infants in the high arousal context were rated as lower distress, and human babies in low arousal rated lowest.

The Association Of Feline Behavior To Acoustical Features Of Kitten Directed Speech, Daniela Acevedo

Theses and Dissertations

This study observed responses of cats to kitten and adult human directed speech. Human vocalization analysis showed significant variation in harmonicity for kitten directed speech. Playback experiments analyzing feline responses to owners and strangers using kitten and human directed speech showed higher attentiveness to a stranger’s kitten directed speech.

Assessing Behavioral Syndromes In Captive Red Pandas (Ailurus Fulgens) Using An Ethological Approach, Tyler C. Bray

Theses and Dissertations

Animal personality has a significant impact on an animal’s physiology and welfare. Eight captive red pandas were observed to determine if personality can be assessed in this species using an ethological approach. Analysis revealed two behavioral dimensions: 1) Active/Exploratory and 2) Maintenance. Age differences were found in the Active/Exploratory dimension.

Assessing Preference For Contrafreeloading And Other Feeding Strategies In Giraffe (Giraffa Camelopardalis), Jacinthe Sasson-Yenor

Theses and Dissertations

Giraffe were provided with a choice between easy and difficult food sources containing varying proportions of grain. Individual giraffe showed fixed preferences for contrafreeloading (working for food), eating at the easy source, or following the food distribution. Introduction of the contrafreeloading opportunity also led to a decrease in displacements.

Does Genotype Correlate With Phenotype? Evaluating Ruffed Lemur (Varecia Spp.) Color Vision Using Subject Mediated Automatic Remote Testing Apparatus (Smarta), Raymond Vagell

Theses and Dissertations

Ruffed lemur (Varecia spp.) color vision research was conducted using a multidisciplinary approach: psychophysics, genetic analysis, technology, and animal training. The behavioral manifestation of Varecia spp. trichromacy was shown using a touchscreen apparatus (SMARTA). Trichromats performed better than dichromats when discriminating red from green (G₂ = 78.10, p < 0.001).

Are Weevils Picky Eaters? Community Structure And Host Specificity Of Neotropical Saproxylic Beetles (Coleoptera: Curculionidae), Jhunior A. Morillo

Dissertations and Theses

Abstract Primary saproxylic beetles play a major role in forest nutrient cycling and making deadwood accessible to other decomposers. Understanding beetle host preferences and patterns of community assembly is critical for their conservation, and for predicting which species might become invasive. This project aims to investigate the ecological and host specificity, as well as the community composition of curculionids in a mosaic of old-growth (OG) and secondary forest on the Osa Peninsula, Costa Rica. The subfamily Scolytinae was expected to be the most species-rich and abundant. Ambrosia beetles were expected to have more generalist species than other curculionids. Old growth …

Investigating Attachment Behavior In Shelter Dogs, Anamarie Johnson

Theses and Dissertations

This study utilized a modified Strange Situation Test to investigate attachment behavior of shelter dogs to an experimental owner and a stranger observing physical contact and location. No difference was seen in physical contact but a small difference was seen in location.