Dogs exhibit jealous behaviors. The first experimental test of jealousy in dogs supports the view that there may be a more basic form of jealousy, which evolved to protect social bonds from interlopers.
Sense of smell is critical for survival in many mammals. In a new study, researchers examined the olfactory receptor repertoire encoded in 13 mammalian species and found that African elephants have the largest number of OR genes ever characterized; more than twice that found in dogs, and five times more than in humans.
Pigs that are bred commercially in Europe are found to have a highly varied mosaic of different European and Asian gene variants. The Asian genes in particular result in a large number of piglets in European pig breeds. Researchers now explain that a number of important characteristics of European pigs have Asian origins. They previously demonstrated that the genetic diversity among commercial pig
Four out of five pet owners now consider their pet a member of the family, and consumers are shifting their priorities when it comes to purchasing food for their pets accordingly. One expert writes about recent trends in gourmet pet food in a newly published article.
UK legislation that targets 'dangerous dogs' has not been shown to reduce dog bites and policies should be based on evidence and risk assessment, suggests a new article. Risk assessment for human violence has proved to be accurate and reliable and the author says this "might be a practical preventative measure to reduce injury from dog bite" along with medical and veterinary professionals "familia
More than 140 years ago, Charles Darwin noticed something peculiar about domesticated mammals. Compared to their wild ancestors, domestic species are more tame, and they also tend to display a suite of other characteristic features, including floppier ears, patches of white fur, and more juvenile faces with smaller jaws. Since Darwin’s observations, the explanation for this pattern has proved elus
Low-fat wieners made with olive oil rather than pork fat make progress toward a healthful alternative hot dog without sacrificing satisfying flavor and texture.
When a breeding wolf dies, its sex and the size of its pack can determine whether that pack continues, according to research. In 2012, biologists at Denali National Park and Preserve noted a drop in wolf sightings following the death of a breeding female from a pack that lived along the Denali Park Road.
Nearly every second dog develops cancer from the age of ten years onward. A few therapies derived from human medicine are available for dogs. A very successful form of therapy by which antibodies inhibit tumor growth has not been available for animals so far. Scientists have developed, for the first time, antibodies to treat cancer in dogs.
In their quest to understand what kind of hunter the extinct marsupial Thylacine was, two paleobiologists built a dataset of forelimb bone measurements that predict the predation style of a wide variety of carnivorous mammals.
Excessive sunbathing damages the skin. Humans are not the only ones who need to monitor their exposure to UV rays: animals are at risk too. Dogs and cats with white or thin coats are at particular risk, as are animals with very closely shorn fur or with certain pre-existing conditions.
New research suggests that dogs who spend a short time in boarding kennels may not find it unduly stressful and could in fact find the change of scenery exciting.
The burger patty that slides off the plate, the ice cream treat that plops on the picnic table, the hot dog that rolls off the grill -- conventional wisdom has it that you have five seconds to pick it up before it is contaminated. Fact or folklore? “A dropped item is immediately contaminated and can’t really be sanitized,” explains one researcher. “When it comes to folklore, the ‘five-second rule’
A study published in The Prostate offers hope to men suffering from benign prostatic hyperplasia. Scientists treated 20 affected dogs with pulsed electromagnetic field therapy for 5 minutes, twice a day, for three weeks. This noninvasive technique resulted in an average 57 percent decrease in the size of the prostate gland. The researchers also found no side effects or impact on libido, semen qual
Viruses often get bad press. Likened to Trojan horses they are often associated with disease. But, it is precisely because of their infectious nature that they can potentially be used as gene vectors - which are vehicles loaded with good copies of malfunctioning genes - and delivered to cells. This is difficult but even more so is penetrating the fortress of the brain. But this is exactly what gen
The endangered African wild dog is increasingly coming into conflict with humans, partly because it is difficult to fence them out. But research shows that an unusual approach to keeping them away from people and livestock may offer hope. Promising experiments show that scent marking is more effective as a barrier than fences.
Equine influenza viruses from the early 2000s can easily infect the respiratory tracts of dogs, while those from the 1960s are only barely able to, according to research. The research also suggests that canine and human influenza viruses can mix, and generate new influenza viruses.
A new study has shed new light on the use of mollusc shells as personal adornments by Bronze Age people. The research team used amino acid racemisation analysis (a technique used previously mainly for dating artefacts), light microscopy, scanning electron microscopy and Raman spectroscopy, to identify the raw materials used to make beads in a complex necklace discovered at an Early Bronze Age buri
Coyote and red fox fur trapping records across North America have been used by scientists to document how the presence of wolves influences the balance of smaller predators further down the food chain. From Alaska and Yukon to Nova Scotia and Maine, the researchers have demonstrated that a "wolf effect" exists, favoring red foxes where wolves are present and coyotes where wolves are absent.
British Columbia's mainland wolves and coastal wolves are more distinct than previously believed, research shows. The discovery emphasizes the importance of incorporating traditional ecological perspectives with empirical scientific methods, and the authors attribute the observed genetic differentiation to the profoundly different ecological environments.
For centuries, dogs have been described as man’s best friend. This bond may be linked to your dog's behavior, according to a new study by a professor of animal behavior, ecology and conservation. The study revealed that the more dogs demonstrate attention-seeking behavior with their adult owners, the more attached these owners are likely to be with their dogs. Interestingly, however, this made no
Veterinary researchers have identified a unique group of proteins that indicate the presence of transitional cell carcinoma -- the most common cause of bladder cancer -- and may lead to a new assay which could better diagnose this disease in both dogs and humans. Bladder cancer is particularly common in some dog breeds, such as collies, sheepdogs and terriers, but is rarely diagnosed in animals be
While countless pet owners peacefully sleep with a warm pet nearby, a new study finds an increase in the number of people experiencing sleep disturbances because of their pets.
A new analysis of European archaeological sites containing large numbers of dead mammoths and dwellings built with mammoth bones has led to a new interpretation of these sites -- that their abrupt appearance may have been due to early modern humans working with the earliest domesticated dogs to kill the now-extinct mammoth.
Until a short while ago, infections with the parasite Dirofilaria repens was regarded as a classical traveler's disease. Mosquitoes from abroad passed the parasite on to dogs, in some cases even to humans. The most recent research data have shown, for the first time that the parasite has been imported to Austria and established here. In mosquitoes from the state of Burgenland, the scientists found
Fruit-fly ovaries were used in a new study to uncover how E-cadherin guides collective cell migration. According to traditional scientific dogma, E-cadherin acts like the mortar between bricks, holding cells together and preventing motility. This research team found the opposite: Cadherin is actually promoting the ability of cells to move and migrate. "It's doing it in three different ways in thre
Osteosarcoma is a highly aggressive bone tumor that affects at least 10,000 dogs annually in the United States. It is most commonly seen in the adult large and giant breeds such as Rottweilers, Labrador retrievers, greyhounds, Newfoundlands, Irish wolfhounds, Great Danes and Scottish deerhounds. “Since dogs with osteosarcoma represent spontaneous bona-fide model of the same disease in children, it
A 10-year-old Yorkshire Terrier has been treated for blindness and brain damage in order to lead a more normal life. An MRI identified a cavity and inflammation in areas predominantly on the right side of the brain. Additionally, Tinkerbell was also found to have a congenital brain problem termed hydrocephalus (water on the brain). Despite receiving several medications daily, Tinkerbell looks forw
Border collies are effective at reducing gull congregation on recreational beaches, resulting in lower E. coli abundance in the sand. Gull droppings may be one source of the indicator bacterium Escherichia coli to beach water, which can lead to swim advisories and beach closings. In addition, gull droppings may contain bacteria with the potential to cause human disease, according to a researcher.
Pets and other domesticated animals could provide new clues into the emergence of infections that can spread between animals and humans. The study showed that the number of parasites and pathogens shared by humans and animals is related to how long animals have been domesticated. The findings suggest that although wild animals may be important for the transmission of new diseases to humans, humani