Articles tagged with Dogs
Researchers found that dietary intervention increased skin gene expression manifold, with raw food activating the immune defense system and increasing antioxidant production. This study suggests that a raw diet may help activate the immune defense of dogs, potentially reducing the risk of atopic dermatitis.
Researchers found that dogs' looking times were influenced by the owner's expressed preference, but not their fetching behavior. The study suggests that dogs can perceive and respond to human displays of preference, but may not fully understand the subjective nature of desire.
New research at Uppsala University reveals Swedish, Finnish and Russian wolves share a common genetic constitution, indicating a virtually pure origin from Finland and Russia. Genetic analysis of over 200 wolf samples found no evidence of hybridization with dogs in the Fennoscandian wolf population.
Researchers at North Carolina State University have discovered a new Rickettsia species in dogs that is part of the spotted-fever group. This new species has been found in multiple dogs across the US and shares genetic similarities with human Rickettsia pathogens.
Researchers used ancient DNA samples to reconstruct the population history of prehistoric dogs, finding they diverged into at least five distinct lineages by 11,000 years ago. The study also suggests human-dog migration patterns didn't always align, with some populations showing little genetic influence from wolves.
A team of researchers found five different types of dogs with distinct genetic ancestries dating back to before animal domestication. The study sheds light on the origins of modern-day dogs and their relationship with humans.
Newly sequenced ancient dog genomes show a long shared history with humans, with dogs diverging from wolves around 11,000 years ago. The study reveals multiple dog lineages worldwide by this time, and genetic links to human migration patterns.
A global study of ancient dog DNA found at least five different types of dogs more than 11,000 years ago in Europe, the Near East, and Siberia. The research team sequenced DNA from 27 dogs, showing that canine diversity originated when humans were still hunters and gatherers.
Researchers at Johns Hopkins University used positive reinforcement to train a robot named Spot to perform several tasks in days, compared to months. The team devised a reward system that works for robots like treats do for dogs, earning numeric points for correct behaviors.
Researchers used digital endocranial cast models to compare canine brain shapes, finding that the shortening of the facial skeleton affects brain regions, primarily the olfactory bulb and frontal lobe. This could have profound implications for dog behavior and cognition.
Researchers found that adult wolves form individualized social bonds with their human handlers and display attachment-like behaviors when separated. These findings suggest that the evolution of dog-human attachment may be linked to the common ancestor's social system.
A new study published in Scientific Reports found that lubricin, a protein that lubricates joints, increases in dogs with ACL injuries before signs of arthritis appear. The discovery has implications for human ACL and other orthopedic injuries, suggesting increased lubricin may be a biomarker for predicting future osteoarthritis.
Researchers found that dog personality has a 'stable' component, but individual dogs change at different rates, and some exhibit age-related impairments. Longitudinal studies showed that specific traits, like Problem orientation and Novelty seeking, change significantly during early life.
Researchers used fMRI to compare brain activity in humans and dogs while watching videos of other animals. Dog brains showed no face-specific activation, unlike humans, but did display species preference for viewing a dog over a human.
A recent study published in The Journal of Neuroscience has revealed striking similarities and differences in how dog and human brains process visual information about others. Researchers used fMRI to compare brain activity patterns between twenty dogs and thirty humans, finding both analogous and divergent patterns of species- and fac...
The rehoming process involved months of basic pet dog skills training and outdoor acclimation. Some dogs experienced separation anxiety, highlighting the need for improved facility design and socialisation strategies.
Research on ancestral wolf species reveals evidence of food-sharing and family care, as evidenced by healed injuries. Fossil specimens from China and California show similar dental infections and leg fractures to modern wolves.
A study of search and rescue dogs found that dogs at the disaster site lived a similar length of time as those in a control group, with no discernable difference in cause of death. The most common cause of death was age-related conditions such as arthritis and cancer.
Researchers at Clemson University have identified two genetic variations associated with small body size and lance canine, a dental anomaly common in Shetland Sheepdogs. The study found that dogs with these variations are on average one inch shorter and six pounds lighter than unaffected breeds.
A study found genetic variants associated with a dental anomaly and smaller body size in dogs, particularly in toy breeds. These variants affect the processing of growth hormone and RNA enzymes, leading to reduced height and weight.
A new study found that aged pet dogs experience declines in four out of six behavioral factors, including problem-solving, sociability, and boldness. The research suggests that further studies are needed to determine the potential links between aging, nutrition, and training on canine cognition.
Researchers at Colorado State University found a genetic mutation associated with dogs having hypothyroidism being less likely to develop T-zone lymphoma. The study suggests that a region of chromosome 8 linked to thyroid hormone regulation may play a crucial role in the development of the disease.
The Australian labradoodle breed is primarily composed of poodle genetics, with smaller contributions from Labrador retrievers and spaniels. This study's findings suggest that selective breeding for a poodle-like coat has led to the development of hypoallergenic traits in the breed.
Scientists analyzed six dog foods and found that certain aroma compounds, including (E)-2-hexenal, 2-furfurylthiol, and 4-methyl-5-thiazoleethanol, were correlated with increased canine intake. These findings could help dog food manufacturers create more appealing kibble.
A study comparing young hand-raised wolves and dogs found that dogs are more tractable than wolves, especially in contexts involving access to resources. Dogs were more prepared to follow human initiation of action, but this difference diminished with age.
Researchers discovered a vestigial first metacarpal in African wild dogs, reorganizing associated muscles for proprioceptive functions. They also identified stout ligaments and muscular adaptations for long-distance running, enabling the species to pursue prey to exhaustion.
Researchers at Texas A\(M University have created a therapeutic derived from turmeric that reduces ocular inflammation in dogs with uveitis. The treatment bypasses intestinal and ocular barriers for improved absorption, offering a safer alternative to current medications.
Researchers found a negative correlation between Fusobacteria phylum abundance and chronological age in dogs, as well as a link between Actinobacteria and poorer short-term memory performance. The study suggests shared mechanisms underlying canine and human cognitive aging.
Researchers used genomics to discover the New Guinea singing dog still thrives in the Highlands of New Guinea. The study reveals that captive dogs have lost genomic variation due to inbreeding, threatening their survival.
A study reveals genetic similarities between New Guinea highland wild dogs and captive NGSDs, suggesting a shared ancestry. The discovery could help bolster NGSD populations through conservation efforts.
Despite severe health problems, 93% of flat-faced dog owners want to own their breed again in the future. Positive behavioral attributes and suitability for a sedentary lifestyle are common reasons for reacquisition or recommendation. However, owners acknowledge significant health risks, including respiratory disease and heat stroke.
A study by University of Pennsylvania researchers describes an effective gene therapy for Krabbe disease in dogs, which has shown promising results with no significant symptoms after four years. The treatment approach, using the AAV9 vector, has also been found to positively affect both central and peripheral nervous systems.
A new Oregon State University study suggests that firefighters are more likely to be exposed to potentially harmful chemicals while on duty compared to off duty. The researchers found 18 PAHs that have not been previously reported as firefighting exposures, and exposure levels increased with the number of fires responded to.
A study published by the University of Helsinki found that an active lifestyle can significantly reduce fearfulness in dogs. The research revealed significant breed differences, with some breeds, such as Chinese Crested Dogs, being less fearful than others, like Cairn Terriers.
Research suggests that dogs are still a major threat to giant pandas in Chinese nature reserves, with 40% of habitats within range of roaming dogs. Implementing dog-control measures, such as licensing and neutering, is crucial for the bears' survival.
A new study from UC Davis found that mixed-breed dogs weighing over 44 pounds are at higher risk for joint disorders if neutered before 1 year of age. The study suggests that dog owners should consider their options carefully when deciding whether to spay or neuter their pet.
According to a recently published commentary article, increased rates of dog bites in children have been observed during the COVID-19 pandemic. The authors attribute these increases to heightened stress for dogs and decreased adult supervision around dogs and children.
A study in Journal of Marketing found that the dueling preferences approach can increase prosocial gifts, such as tipping and donating. This approach frames giving as a choice between two options, tapping into people's desire to express themselves.
Researchers found that filling homes with calming pheromones can reduce undesirable interactions between cats and dogs, such as dog chasing cat or barking at cat. Both Feliway Friends for cats and Adaptil for dogs showed positive effects on desirable behaviors like friendly greetings and relaxation in the same room.
Research suggests that 1 in 4 UK puppies may be acquired before the minimum recommended age, risking health and behavioral problems. Factors associated with early adoption include visiting the puppy before taking it home or intending to use the dog for work.
A new study reveals that dog brains, like human brains, process speech in a hierarchical manner, with intonation processed at lower stages and word meanings at higher stages. The research used functional MRI to measure brain activity in awake dogs while they listened to praise words and unknown neutral words in different tones.
A study by Purdue University reveals that the primary role of PTSD service dogs is to disrupt episodes of anxiety, with trained tasks being used an average of 3.16 times per day. The dogs' trained behaviors, such as nudging or licking veterans to focus, were also reported to be highly important.
Researchers found that pigs initially initiate interactions with humans as dogs do, but in a problem-solving situation, pigs persist on their own, while dogs rely on humans for help. This study compares the communication behaviors of dogs and pigs in a problem-solving context.
Researchers at MU successfully treated bone cancer in dogs with a vaccine that stimulates the immune system against abnormal proteins specific to the patient's tumor. The treatment outperformed chemotherapy, resulting in over 400 days of cancer survival for dogs compared to about 270 days for those receiving traditional chemotherapy.
A comprehensive study of 35 dog breeds found that vulnerability to joint disorders varies greatly depending on the breed, with smaller breeds generally unaffected. The study also identified significant increases in certain cancers in smaller dogs when neutered, highlighting the need for personalized neutering decisions.
A recent study claiming the coronavirus may have jumped from dogs to humans lacks direct evidence, according to a collaborative group of international researchers. The team refuted the earlier study, highlighting that dogs are not special in their content of proteins that interact with viral CpG content.
Researchers found that natural-origin sorbent materials, including peat moss, dog fur, and human hair products, can be effective in cleaning up oil spills on land. Sustainable options like dog fur and human hair show promise as cheaper and biodegradable alternatives to synthetic fabrics.
Research found that owner behavior, rather than internal principles like the principle of least effort, affects the effort and accuracy of dogs' showing. Owners who encouraged their dog to show where a toy was hidden increased effort but decreased accuracy.
Research found that children from dog-owning households had better social and emotional wellbeing, with reduced difficulties in emotions and social interactions. Regular family dog walks and playtime were associated with even more positive outcomes.
A study in Kenya found that grassroots dog vaccination campaigns can prevent rabies deaths, but to eliminate the disease, larger efforts are required. The efforts involved vaccinating over 13,000 dogs and raising awareness among children about rabies prevention.
Researchers at UC San Diego develop new method to accurately compare dog age to human age, based on methyl group patterns in genomes. The formula provides a 'molecular clock' that can help evaluate anti-aging products and understand aging processes in dogs.
Researchers found a new formula that better matches canine-human life stages, with an 8-week-old dog equivalent to a 9-month-old baby. The study also identified developmental genes that drive aging and created an age-measuring clock for different species.
Researchers at the University of Pennsylvania used a glowing dye to illuminate cancerous tissue during surgery, which helped identify spread to lymph nodes. The technique could improve outcomes in breast cancer patients undergoing breast-conserving surgery.
Thylacosmilus atrox, a marsupial from Argentina, was previously thought to be a fierce predator like Smilodon. However, new research reveals it was likely a scavenger, using its canines to open carcasses and possibly its tongue to extract innards. Its skull and teeth show distinct differences from those of placental saber-toothed cats.
Researchers sequenced ancient DNA from a 9,500-year-old dog, revealing that modern sledge dogs share a common origin with the ancient breed. The study also found genetic adaptations similar to those of polar bears and Arctic people.
Genetic study reveals modern sled dog breeds share a distinct lineage that emerged at least 9,500 years ago. The analysis of ancient and modern Arctic dog genomes suggests gene flow from Siberian Pleistocene wolves, highlighting the importance of sled technology in human subsistence.
A recent study found that walking with a shelter dog can decrease psychological and physiological stress indicators in military veterans, particularly those with higher PTSD symptom severity. The researchers measured heart rate variability, salivary cortisol, and alpha-amylase before, during, and after walks with dogs or humans.
A recent international study found a significant shift in pet feeding practices over the past decade, with a rise in raw and home-made foods. The research warns that these unconventional diets may pose health risks for animals, citing nutrient deficiencies and bacterial contamination.
A UK study found that older and heavier dogs are more susceptible to heat-related illnesses, with flat-faced breeds like pugs facing higher risks. The study also highlighted the importance of maintaining a healthy bodyweight and breeding for respiratory function in dogs.
A study found that dog breeds labeled as 'cooperative' and 'independent' do not exhibit different responses to unfair outcomes, contrary to previous hypotheses. Dogs from both breed groups displayed inequity aversion, with some differences in behavior observed between the groups.