Hemangiosarcoma cancer linked to Bartonella bacteria

Researchers at North Carolina State University have found that dogs who have hemangiosarcoma, a cancer of the blood vessels have high levels of Bartonella bacteria. This leads researchers to believe that there is a connection between persistent infection and/or inflammation and some types of cancer.

Hemangiosarcoma (HSA) is an aggressive, deadly cancer that comes from cells lining the blood vessels. It is responsible for two-thirds of all heart or splenic tumors in dogs, and is most common in medium-sized and middle-aged dogs.

What makes this difficult is that the bacteria are found in tumors and tissues but not detectable in blood samples. This indicates that Bartonella can survive undetected within tissue.

I have personally lost two dogs to cancer of the spleen. I hope that the researchers can develop a simple test to detect hemangiosarcoma and the Bartonella bacteria.

Jib, SAR dog who died from cancer of the spleen

Feeding indoor cats once a day is healthier

Many cat owners have been told to feed their cats up to four times a day. Some cat owners have a self-feed system where food is left out all day. What is surprising is that a recent study showed that cats are healthier if they are fed only once a day. Animal nutrition specialists in U of G’s Ontario Veterinary College (OVC) and Ontario Agricultural College (OAC) conducted a study and found that cats who eat once a day were less hungry which might help prevent cats from becoming overweight.  

          The study showed that cats that ate once a day were more satisfied and burned stored fat which helped them keep a healthy body mass. They also had more protein which helps build and maintain body mass an important benefit for older cats to help prevent sarcopenia.

Non-social fear in dogs

According to a recent study at the University of Helsinki there are a number of factors that cause a dog to have non-social fears.

The researchers studied 14,000 dogs of various breeds and found that those who were fearful of novel situations, noise sensitivity, slippery surfaces, heights and transparent stairs, for example, benefited from physical activity. Some dog owners avoid doing things with their dogs because they do not want to put them into situations that cause fear.

Lily and Jib

Lack of proper socialization is also a contributing factor that causes a dog to develop fear. They found that urban dogs are more fearful than rural dogs and fear is more common in spayed females and smaller dogs.

The article goes into more detail about the various breeds and the fears that they have. Interestingly they stated that Cairn Terriers were among the most fearful breeds.

The fact that there are breed differences indicates that a good breeding program can go a long way in reducing fear in breeds of dogs. Socializing puppies is something everyone can do. However, it should be done under the guidance of a competent dog trainer, especially for first time dog owners.

Health issues related to early spay and neuter of dogs

For many years I have had working dog people tell me that a dog should not be neutered or spayed until after they reach puberty. For a bitch that would be after the first heat. They claimed that the dog fully develops mentally after puberty and that early neutering and spaying retards this development.

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In a recent study, scientists found that some breeds have a higher risk of developing certain cancers and joint disorders if they are neutered or spayed during their first year of life.

This study looked at 35 breeds over a ten-year period and analyzed thousands of dogs over fifteen years. What is interesting is that the age and sex of the dogs did factor into whether or not the dogs were afflicted with health issues.

The health issues under consideration included hip dysplasia, cranial cruciate ligament tears and elbow dysplasia, lymphoma; hemangiosarcoma, or cancer of the blood vessel walls; mast cell tumors; and osteosarcoma, or bone cancer. While the study showed that early neutering did not affect all of the dogs, there were breed related problems.

I personally feel that a dog needs the full range of hormones to fully develop mentally. But it can be difficult for the owners of female dogs to control a bitch in heat and prevent an unwanted litter. For the owners of male dogs there are methods to prevent the dog from siring an unwanted litter other than neutering. It is always wise to consult with your veterinarian and explore all of your options.

As an aside, I would like to see a similar study about the health and mental affects of early spay-neuter in cats.

Dogs monitor environmental chemicals

In a study conducted by North Carolina State University and Duke University’s Nicholas School of the Environment, researchers attached a silicon tag on dog’s collars to collect the environmental chemicals that people (and dogs) encounter every day. What they found was interesting. The researchers had the dogs wear tags and their owner’s wrist bands for five days, then they compared the results.

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What they found was that there were similar patterns of exposure for both dogs and humans. The contaminants were mostly from the home environment. The researchers tested for three main contaminants, pesticides, flame retardants, and phthalates, which are found in plastic food packaging and personal care products.

The advantage of evaluating the contaminants in dogs is that diseases that result from these contaminants may take decades to show up in humans but only years to show up in dogs. According to Matthew Breed, Oscar J. Fletcher Distinguished Professor of Comparative Oncology Genetics, if scientists can develop ways to link dog disease with these exposures, they may find a way to decrease the diseases for both dogs and humans.

I would like to see the tests expanded to other household pets such as cats. This is an interesting study and using the silicon tag is inexpensive and works well.

CBD for dogs

In a study at Baylor College of Medicine the researchers found that giving dogs with arthritis cannabidiol, or CBD brought relief from arthritis. It has also been used to reduce anxiety in dogs. As an aside, I know that when I give it to my dog before a thunderstorm, he is much calmer. It does seem to take about a half an hour to work but it does help.

Scout SAR training wood pile

Dr. Matthew Halpert, of the Department of Pathology and Immunology at Baylor conducted the research about arthritis and found that nine out of the ten dogs tested benefited from CBD. They also noted that the pain relief lasted for about two weeks after the treatments stopped.

It seems that CBD significantly reduces the production of inflammatory molecules and immune cells associated with arthritis. The improvement in the quality of life for the dogs was documented by both the dog’s owner and veterinarians. Since the structure of arthritis in dogs is similar to humans, the study supports future scientific evaluation of CBD for human arthritis.

However, it should be noted that the researchers found that the effect was quicker and more effective when CBD was delivered encapsulated in liposomes than when it was administered ‘naked.’ Liposomes are artificially formed tiny spherical sacs that are used to deliver drugs into tissues at higher rates of absorption. This means that buying CBD over the counter may not work as well or as quickly.

If you would like to try CBD, talk to your veterinarian first. It is never a good idea to administer any type of medication, natural or otherwise, without first checking with your veterinarian. I know from personal experience that although veterinarians use human medicines and herbal formulas for dogs, the dosage can be radically different for a dog.

Coronavirus structure clue to high infection rate

This is an interesting study and one that everyone should read. According to the study conducted by Gary Whittaker, professor of virology, is the senior author on the study at Cornell University, primates, cats, ferrets, and mink are the most susceptible to the human virus.

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According to Whittaker, further research into feline coronaviruses might provide further clues into SARS-CoV-2 and coronaviruses in general.

New strain of canine distemper in wild animals

A new strain of canine distemper has been found by pathologists with the New Hampshire Veterinary Diagnostic Lab at the University of New Hampshire. The infected animals were from New Hampshire and Vermont. The animals infected are fishers, two gray foxes, one skunk, one raccoon, and one mink. This is a distinct strain has not yet been found in domestic dogs. There is no way to determine how many animals are or have been infected that are undetected by veterinarians and researchers.

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Symptoms of distemper in domestic dogs include respiratory disease, oral and nasal discharge, gastroenteritis and in advanced stages, neurological disease. If your dog should show any of these symptoms, take it to your veterinarian immediately. It is very important that you get your dog’s yearly shots to prevent infection.

What is important to note is that pathologists discovered that this distinct strain was identified in one raccoon in Rhode Island in 2004. This means that the disease has traveled.

The questions now are how far it will travel and how likely is it that some domestic dogs will catch it and spread it among the pet dog population. Dog owners should be diligent in watching their dogs, especially if they have an encounter with a wild animal.

Pets and autism

It has been fully documented that children who suffer from autism can benefit from living with a pet. However, a new study by Gretchen Carlisle, a research scientist with the Research Center for Human-Animal Interaction in the MU College of Veterinary Medicine has found that the parents of autistic children also benefit from having a pet in the family. Having a pet reduces the stress in parents despite the extra responsibility of owning and caring for a pet.

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The study goes on to stress that the right type of pet should be selected that will help the autistic child. They suggest that in some cases a quieter cat may be better than an active dog. Certain types of birds or small animals might also qualify as a pet. They also suggest that the child be included in the selection of the type of pet.

As a certified animal behavior consultant, I want to add that if the family decides to adopt a pet, extra care must be taken to ensure that there are no behavioral issues with the pet that could cause an extra level of responsibility for the parents. For any child, being forced to rehome a pet due to behavioral issues after the child becomes attached to the pet is not a desirable situation.

This is why it is important to thoroughly research the types of pets as well as the individual animal to make sure it is suitable for the spectrum of autism the child has. One way to do this is to consult with a qualified dog, parrot or cat behavior consultant (iaabc.org) or an experienced dog trainer if a dog is a consideration.

Petting zoos pose a risk of infection for humans and animals

Professor Shiri Navon-Venezia of Ariel University, Ariel, Israel and colleagues conducted a study to see if there is a risk of infection to both humans and animals. “Extended spectrum beta-lactamase (ESBL) and AmpC-producing Enterobacteriaceae (AmpC-E), which are resistant to a number of commonly used antibiotics, have become a matter of great concern in both human and veterinary medicine, so understanding the likelihood of them colonising the animals is critical to evaluating the risk that may be posed to visitors.”

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The researchers also found that if an animal was treated with antibiotics it was seven times more likely to shed MDR bacteria.

Petting zoos are important for educational purposes as well as bringing happiness to both adults and children. However, it is important that petting zoos provide hand washing stations. People who go to petting zoos should wash their hands before and after interacting with the animals.

While this study focused on petting zoos, the same rules should apply to fairs where livestock is housed for show and competition. Many people pet the livestock or walk near their stalls. It is important to note that some of the bacteria comes from the animal droppings, so care should be taken to clean the bottom of shoes before you enter your car or home. If you wear flipflops or another type of open shoe such as a sandal, it would be wise to wash your feet as well. This is critical if you own pets.

If young children are allowed to interact with animals, be careful that they do not put their hands on their faces, in their mouth or handle food before washing thoroughly.