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Dog aggression

Parvene Farhoody, Indika Mallawaarachchi, Patrick M Tarwater, James A Serpell, Deborah L Duffy, Chris Zink
Gonadectomy is widely used to treat and prevent behavior problems including the aggressive behavior of dogs. The aim of this study was to determine whether aggressive behavior toward familiar people, strangers, or other dogs was significantly different in dogs gonadectomized at various ages vs. intact dogs using the Canine Behavioral Assessment Research Questionnaire (C-BARQ) with multivariate analysis. Of 15,370 initial surveys, those for dogs reported to have been gonadectomized at less than 6 weeks of age or to correct a behavior problem, and those with incomplete answers to questions regarding independent or dependent variables were excluded, leaving 13,795 for the analysis of aggressive behavior toward familiar people: 13,498 for aggressive behavior toward strangers and 13,237 for aggressive behavior toward dogs...
2018: Frontiers in Veterinary Science
Patrizia Piotti, Liam Paul Satchell, Tom Steven Lockhart
Trait impulsivity is an increasingly relevant topic for human and non-human animal personality research. There are similarities in dog and human manifestations of trait impulsivity at the behavioural, genetic, and neurobiological level. We investigated a well-validated measure of dog impulsivity and responsivity (the Dog Impulsivity Assessment Scale, DIAS) and a neuropsychological theory of human trait approach and avoidance (the Reinforcement Sensitivity Theory of personality, RST). Owners reported their dogs' dispositional behaviour on the DIAS, an RST scale modified to describe dogs' behaviour, and a list of common dog behaviour problems...
March 9, 2018: Behavioural Processes
M Sato, H Mochizuki, Y Goto-Koshino, A Fujiwara-Igarashi, M Takahashi, K Ohno, H Tsujimoto
Death-associated protein kinase (DAPK) is a serine/threonine kinase and a tumour suppressor gene. Diffuse large B-cell lymphomas with inactivated DAPK through hypermethylation of a CpG island is known to result in a biologically aggressive phenotype in humans. This retrospective study was carried out to analyse the prognostic significance of DAPK CpG island hypermethylation in canine lymphoma. We hypothesized that DAPK CpG island hypermethylation can be a negative prognostic indicator in dogs with nodal high-grade B-cell lymphoma...
March 12, 2018: Veterinary and Comparative Oncology
Gaëlle Pédrono, Cécile Ricard, Marilyne Bouilly, Claude Béata, Guillaume Sarcey, Bertrand Thélot
INTRODUCTION: Every year in France dog bites lead to several thousand visits to emergency departments and numerous hospital admissions. OBJECTIVE: This study aims to describe the sequelae 16 months after dog bites. MATERIALS AND METHODS: Following an initial epidemiological study on the severity of 485 dog bites carried out in 8 hospital emergency departments between May 1, 2009, and June 30, 2010, a second study investigating sequelae 16 months after the bite was conducted among 298 patients between September 2010 and December 2011...
February 23, 2018: Wounds: a Compendium of Clinical Research and Practice
Ernest Kenu, Vincent Ganu, Charles Lwanga Noora, Richard Adanu, Margaret Lartey
BACKGROUND: Dog bites are common in developing countries including Ghana, with the victims often being children. Although some breeds of dogs have been identified as being more aggressive than others, all dog bites carry a risk of infection. Immediate and initial assessment of the risk for tetanus and rabies infection with appropriate interventions such as wound management and subsequent selection of prophylactic antibiotics are essential in the management of dog bites. This study examined the management of patients with dog bites by frontline service providers at primary healthcare facilities in the Greater Accra Region, Ghana...
February 28, 2018: Infectious Diseases of Poverty
Piera Filippi, Svetlana S Gogoleva, Elena V Volodina, Ilya A Volodin, Bart de Boer
The ability to identify emotional arousal in heterospecific vocalizations may facilitate behaviors that increase survival opportunities. Crucially, this ability may orient inter-species interactions, particularly between humans and other species. Research shows that humans identify emotional arousal in vocalizations across multiple species, such as cats, dogs, and piglets. However, no previous study has addressed humans' ability to identify emotional arousal in silver foxes. Here, we adopted low- and high-arousal calls emitted by three strains of silver fox-Tame, Aggressive, and Unselected-in response to human approach...
August 2017: Current Zoology
Rachel Dale, Sarah Marshall-Pescini, Friederike Range
While food sharing among related individuals can be explained by kin selection, food sharing between unrelated individuals has been more of an evolutionary puzzle. The food-for-sex hypothesis provides an explanation for the occurrence of food sharing among nonkin. However, little is known about the socio-ecological factors that can promote such a commodity exchange. A species mating system is a factor potentially influencing food-for-sex patterns of behavior. Here, we compared wolves, which form pair-bonds, with dogs, which are typically promiscuous in free-ranging contexts, to investigate the effect of reproductive stages on the behavior around a food source in 2 different contexts...
June 2017: Current Zoology
Randall W Renshaw, Jennifer Griffing, Jaime Weisman, Lisa M Crofton, Melissa A Laverack, Robert P Poston, Gerald E Duhamel, Edward J Dubovi
Four out of eleven affected dogs died despite aggressive treatment during a 2015 focal outbreak of hemorrhagic gastroenteritis following a stay in a pet housing facility. Routine diagnostic investigations failed to identify a specific cause. Virus isolation from fresh necropsy tissues yielded a calicivirus with sequence homology to a vesivirus within the group colloquially known as the 2117 strains that were originally identified as contaminants in CHO cell bioreactors. In situ hybridization and reverse transcription-PCR assays of tissues from the four deceased dogs confirmed the presence of canine vesivirus (CaVV) nucleic acids that localized to endothelial cells of arterial and capillary blood vessels...
February 14, 2018: Journal of Clinical Microbiology
Nicholas H Dodman, Dorothy C Brown, James A Serpell
Behavioral problems are a major source of poor welfare and premature mortality in companion dogs. Previous studies have demonstrated associations between owners' personality and psychological status and the prevalence and/or severity of their dogs' behavior problems. However, the mechanisms responsible for these associations are currently unknown. Other studies have detected links between the tendency of dogs to display behavior problems and their owners' use of aversive or confrontational training methods...
2018: PloS One
Michelle L Yakimicki, Nancy E Edwards, Elizabeth Richards, Alan M Beck
This review discusses the relationship between animal-assisted interventions (AAI) and behavioral and psychological symptoms of dementia (BPSD). A systematic search was conducted within CINAHL, Web of Science CAB Abstracts, PubMed, Abstracts in Social Gerontology, Google Scholar, and PsycINFO for primary research articles. A total of 32 studies were included in the final review. Variation was noted in study designs and in study setting. Twenty-seven of 32 studies used dogs as the intervention. Agitation/aggression showed a significant decrease in nine of 15 studies...
February 1, 2018: Clinical Nursing Research
H Henderson, L R Carpenter, J R Dunn
The canine variant of the rabies virus has been eliminated in the United States. Among the public and many healthcare providers, however, dog bites are still associated with risk for rabies transmission. This study examined the risk of rabies in biting dogs and the use of rabies post-exposure prophylaxis (rPEP) for dog bite victims in Tennessee. The study included a retrospective analysis of laboratory testing requisitions for dogs from 2002 to 2016, collection of clinical data on confirmed rabies-positive dogs from 2008 to 2016 and analysis of hospital discharge data for rPEP from 2007 to 2014...
February 12, 2018: Zoonoses and Public Health
Liz Stelow
Clinicians play an important role in diagnosing problem behaviors as a precursor to treating them. This requires a protocol for gathering historical behavioral and health information, direct observation and examination of the animal, and a broad knowledge base of medical and behavioral differential diagnoses for those findings. Aggression and anxiety are the most commonly reported behavior problems in dogs. In cats, elimination problems and aggression are the most prevalent. Other important diagnoses for these species are cognitive dysfunction and abnormal repetitive behaviors...
February 8, 2018: Veterinary Clinics of North America. Small Animal Practice
N S De Paula, E A Saraiva, I M Araújo, K K G Nascimento, D A Xavier, K S Santos, E M N Abreu, R J P S Guimãraes, I Abel
Animal bites are a serious public health issue, and prevention strategies have been consistently documented worldwide. The aim of this study was to characterize human anti-rabies treatment in 11 counties of the Salgado microregion, Pará state, Brazil, which borders the Bragantina microregion, where exposures of human rabies were reported in 2004 and 2005. A descriptive retrospective study was conducted using anti-rabies treatment notifications registered in the Information System for Notifiable Diseases (SINAN) database of the State Department of Public Health of Pará (SESPA) from January 2000 to December 2014...
February 8, 2018: Zoonoses and Public Health
A P P Teh, U Z Izzati, N V Diep, T Hirai, R Yamaguchi
Merkel cell carcinoma is a rare and aggressive cutaneous neuroendocrine tumour reported only in man, dogs and cats. A 20-month-old Japanese black fattening steer was presented with necrotic protruding skin masses over the left thoracic area and a 20 × 25 cm subcutaneous mass in the left abdominal area. Microscopical evaluation of the masses revealed cords of small to medium-sized round tumour cells with marked anisocytosis and anisokaryosis and clear and vacuolated cytoplasm, which were separated by a delicate fibrovascular stroma and arranged in a trabecular and nested pattern...
January 2018: Journal of Comparative Pathology
Eric C Ledbetter, Rebecca J Franklin-Guild, Michele L Edelmann
OBJECTIVE: To describe the clinical, microbiologic, and histopathologic features of Capnocytophaga keratitis in dogs. ANIMALS STUDIED: Seven dogs with naturally acquired Capnocytophaga keratitis. PROCEDURES: Medical records of dogs with a clinical diagnosis of keratitis and corneal cultures positive for Capnocytophaga spp. were reviewed. Dog signalment, medical history, clinical findings, and diagnostic assay results were recorded. RESULTS: Breeds included Boston terrier (n = 3 dogs), Rat terrier (n = 2), and single cases of mixed breed and Pug...
January 23, 2018: Veterinary Ophthalmology
Christiane Gebhard, Ingrid Miller, Karin Hummel, Martina Neschi Née Ondrovics, Sarah Schlosser, Ingrid Walter
Osteosarcoma is an aggressive bone tumor with high metastasis rate in the lungs and affects both humans and dogs in a similar way. Three-dimensional tumor cell cultures mimic the in vivo situation of micro-tumors and metastases and are therefore better experimental in vitro models than the often applied two-dimensional monolayer cultures. The aim of the present study was to perform comparative proteomics of standard monolayer cultures of canine osteosarcoma cells (D17) and three-dimensional spheroid cultures, to better characterize the 3D model before starting with experiments like migration assays...
January 11, 2018: Journal of Proteomics
Felipe Maglietti, Matías Tellado, Nahuel Olaiz, Sebastian Michinski, Guillermo Marshall
Background: Nasal cavity tumors are usually diagnosed late, when they already have infiltrated adjacent tissues thus requiring very aggressive treatments with serious side effects. Here we use electrochemotherapy (ECT), a well demonstrated treatment modality for superficial tumors. Materials and methods: In the case of deep-seated tumors, the main limitation of ECT is reaching the tumor with an appropriate electric field. To overcome this limitation we introduce the single needle electrode (SiNE), a minimally invasive device that can deliver an appropriate electric field with a simple procedure...
December 2017: Radiology and Oncology
Anna Filley, Mario Henriquez, Tanmoy Bhowmik, Brij Nath Tewari, Xi Rao, Jun Wan, Margaret A Miller, Yunlong Liu, R Timothy Bentley, Mahua Dey
Malignant glioma (MG), the most common primary brain tumor in adults, is extremely aggressive and uniformly fatal. Several treatment strategies have shown significant preclinical promise in murine models of glioma; however, none have produced meaningful clinical responses in human patients. We hypothesize that introduction of an additional preclinical animal model better approximating the complexity of human MG, particularly in interactions with host immune responses, will bridge the existing gap between these two stages of testing...
January 12, 2018: Journal of Neuro-oncology
Courtney R Schott, Laetitia J Tatiersky, Robert A Foster, Geoffrey A Wood
Canine appendicular osteosarcoma is an aggressive bone neoplasm that imposes a short survival time. There are several published histologic grading systems for canine osteosarcoma but no universally accepted system. Location within the skeleton and therapy received are both correlated with survival time, but these factors were not always considered when the prognostic value of published grading systems was determined. Our objective was to compare 2 published histologic grading systems in a population of dogs with appendicular osteosarcoma treated with the standard of care for curative intent...
January 1, 2017: Veterinary Pathology
Kaelyn E Petras, Raegan J Wells, Jocelyn Pronko
OBJECTIVE: to describe the clinical presentation of two canines present in anaphylactic shock secondary to rattlesnake envenomation. In both cases, there was no previous documented previous envenomation event and the initial sensitization required for anaphylactic response is believed to be secondary to Crotalus atrox toxoid vaccine. CASE DESCRIPTION: In the first case, a 12-year-old golden retriever present for collapse, severe hematochezia, and vomiting after first time envenomation from a suspected western diamondback rattlesnake...
December 14, 2017: Toxicon: Official Journal of the International Society on Toxinology
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