Senior Dementia in Dogs: Symptoms & Treatment

Senior dementia is a common problem seen in older dogs just like it is in older humans. Similar to Alzheimer's in people, dementia in dogs often results in altered behaviors and memory loss. These changes may affect the quality of life of both the dogs as well as the dog owners but by better understanding what is really occurring, owners may be able to lessen the negative effects of this issue.

What Is Senior Dementia in Dogs?

Senior dementia is formally known as canine cognitive dysfunction (CCD) but is often also referred to as doggy dementia or doggy Alzheimer's. Dementia isn't a disease but rather a collection of symptoms that result in major changes in mood, behavior, and memory. It usually negatively affects the everyday life of a senior dog and is commonly seen to varying degrees as dogs age. The Behavior Clinic at the University of California states that 28% of dogs aged 11 to 12 years display signs of dementia and that likelihood increases to 68% of dogs when they reach ages 15 or 16.

Leticia Fanucchi, DVM, PhD, director of Veterinary Medicine Behavioral Services at Washington State University's Veterinary Teaching Hospital categorizes CCD into four main types:

• Involutive depression: This form is similar to chronic depression in people and results in anxiety.

• Dysthymia: This form results in confusion, disorientation, and sometimes a loss of conscious awareness of the body.

• Hyper-aggressiveness: This form involves the serotonin, or "happy hormone," levels in the brain and usually results in an aggressive dog.

• Confusional syndrome: This form is similar to Alzheimer's in people where a major decline in cognitive function occurs.

Signs

The signs of senior dementia in dogs revolve around the brain changes that occur as a dog ages. These changes may be gradual and worsen as the dog continues to age or they may seem more drastic in nature. Some symptoms also easily go unnoticed until the dog owner is affected by them.

Signs of Senior Dementia in Dogs

• Soiling in the house

• Getting lost in the house/disorientation

• Barking without reason

• Going to the wrong side of the door

• Lack of interaction with people or other pets

• Decrease or lack of appetite

• Lower threshold for aggressive behavior

• Anxiety

• Irregular sleeping patterns

• Staring at the walls

• Pacing/repetitive behaviors

One of the biggest concerns that dog owners who have dogs with dementia note is the loss of house training. As some dogs develop senior dementia they get confused and may start urinating or defecating in the house. This causes frustration for the owner who may in return get upset with their pet. This affects the human-animal bond and ultimately the quality of life of both the pet and the owner.

Other signs of confusion due to senior dementia include disorientation in the home, staring at walls, and going to the hinged side of a door when the dog has known for years which side of the door opens to go through it. Senior dementia can cause a dog who has known its home environment for years to suddenly get lost in rooms or corners of its house.

Vocalizations, including barking, whining, and crying for no apparent reason, are also often seen in dogs with senior dementia. This may be an indication of stress, fear, or anxiety due to the confusion.

Aggressive behaviors may be more common in dogs with dementia due to their lowered threshold of tolerance and patience. Normally patient and willing dogs may suddenly exhibit signs of aggression such as growling and even biting at people and other pets.

Irregular sleeping patterns, repetitive behaviors such as licking and pacing, a decrease in appetite, and even not wanting to interact with other pets or their owners can be additional signs of senior dementia in dogs. These, along with other behaviors, can all put a strain on the relationships owners have with their dogs.

The most common signs of CCD can be remembered with the commonly used acronym DISHA: disorientation, interaction changes, sleep changes, house soiling, and activity level changes.

Causes

The symptoms are a result of changes or damage in the brain but different symptoms and types of dementia may arise from different brain issues. No one entirely understands the complete causes of dementia. However, there are some things that are known due to the similarities between humans and dogs with dementia. Certain proteins that accumulate in the brain around neurons and the breakdown of neurons are two things that disrupt the normal transmission of information in the brain and therefore contribute to senior dementia in dogs.

Getting a Diagnosis

Your veterinarian will rule out other medical issues with your dog before diagnosing CCD. The Quality of Life Scale (or HHHHHMM Scale) is often used to aid owners in determining whether or not their dog has changed as it ages. This scale goes through the signs of dementia and includes a review of the dog's behaviors. Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility and More good days than bad are assessed in the HHHHHMM scale. This scale also helps an owner decide whether or not a pet's quality of life is still good as dementia progresses and may also help an owner decide when euthanasia should be considered.

Treatment and Prevention

There is, unfortunately, no way to reverse the signs of dementia in dogs but there are some nutritional aids that can be administered to help potentially delay brain changes as a dog ages. Antioxidants, omega-3 fatty acids, and medium-chain triglycerides (MCT's) are the main dietary components that are often discussed for brain health. Some experts recommend supplementing dogs before they begin to show signs of senior dementia but there is no specific treatment or preventative regimen. If you are concerned with CCD developing in your senior dog, talk with your veterinarian about possible preventative measures.

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Food Allergies in Dogs: Symptoms and Treatment

Dogs, like people, can have allergies to certain foods. In fact, food allergies are one of the most common allergic reactions known to affect our canine friends. When your dog is allergic to a particular food, their immune system responds to the food as it might respond to an infection or bee sting, producing antibodies that in turn cause the symptoms associated with the allergic response.

We all know dogs are “garbage guts” and will eat, well, a wide range of stuff. Sometimes it’s hard to distinguish a little upset stomach from an allergic reaction to food. When symptoms such as diarrhea persist, allergies may be the cause. These symptoms usually take time to develop, since your dog’s immune response takes time to produce the antibodies that cause the allergic response.

Symptoms of Food Allergies in Dogs

The most common symptoms of a food allergy are:

• Itching

• Hair loss

• Skin infection

Less common symptoms include:

• Vomiting

• Diarrhea

• Weight loss

• Lethargy

• Hyperactivity

Sometimes, dogs show more aggression because of their discomfort.

The most common foods that cause canine food allergies are proteins such as lamb, beef, chicken, and eggs. In addition, some dogs can be allergic to soy or gluten, which is found in wheat and similar grains. Some dogs may be allergic to preservatives or other food additives, as well.

When a dog eats a food they are allergic to, a vicious cycle occurs: they eat, their body produces an allergic reaction, and they become symptomatic, i.e., they itch, has diarrhea, or may vomit—which is why it is so important to identify the food for which they are having the reaction to. Frustrating, right?

Diagnosing Food Allergies in Dogs

If your veterinarian suspects your dog of having a food allergy, they will perform a thorough physical exam and take a detailed history of your dog’s food intake and activities. In addition, your veterinarian may recommend routine diagnostics to rule out other causes of your dog’s symptoms.

Your veterinarian will likely recommend a strict hypoallergenic diet trial for at least 2–3 months to see if it alleviates your dog’s symptoms. The suggested diet cannot contain any ingredients your dog has been recently eating; there are several specifically designed diets to help prevent food allergies. During the food trial, it is critical that your dog does not get any treats or supplements unless approved by your veterinarian.

Treatment for Dogs With Food Allergies

The best treatment for food allergies is avoidance. Once you’ve identified the food your four-legged friend is allergic to, you will be able to avoid it in the future and help your dog live an allergy-free life. Unfortunately, there is no way to prevent your dog from developing food allergies.

If you have questions about canine food allergies, please talk with your veterinarian—the best resource when it comes to the health and well-being of your best friend.

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What is rabies? What do I do if my pet is infected?

What is rabies?

Rabies is a deadly disease caused by a virus that attacks the nervous system. The virus is secreted in saliva and is usually transmitted to people and animals by a bite from an infected animal. Less commonly, rabies can be transmitted when saliva from a rabid animal comes in contact with an open cut on the skin or the eyes, nose, or mouth of a person or animal. Once the outward signs of the disease appear, rabies is nearly always fatal.

What animals can get rabies?

Only mammals can get rabies; birds, fish, reptiles and amphibians do not. In the United States, most cases of rabies occur in wild animals—mainly skunks, raccoons, bats, coyotes, and foxes. In recent years, cats have become the most common domestic animal infected with rabies. This is because many cat owners do not vaccinate their cats and cats can be exposed to rabid wildlife, either outdoors or when bats get into the house. Rabies also occurs in dogs and cattle in significant numbers and, while not as common, has been diagnosed in horses, goats, sheep, swine and ferrets.

All mammals are susceptible to rabies.

Vaccination programs and control of stray animals have been effective in preventing rabies in most pets. Approved rabies vaccines are available for cats, dogs, ferrets, horses, cattle and sheep. Licensed oral vaccines are also being used for mass immunization of wildlife, particularly raccoons.

What are the signs of rabies in animals?

Once the rabies virus enters the body, it travels along the nerves to the brain. Animals with rabies may show a variety of signs, including fearfulness, aggression, excessive drooling, difficulty swallowing, staggering, paralysis and seizures. Aggressive behavior is common, but rabid animals may also be uncharacteristically affectionate. Horses and livestock with rabies also may exhibit depression, self-mutilation, or increased sensitivity to light. Rabid wild animals may lose their natural fear of humans, and display unusual behavior; for example, an animal that is usually only seen at night may be seen wandering in the daytime.

Although the most common signs of rabies are behavioral changes and unexplained paralysis, rabies should be considered in all cases of unexplained neurological disease. There is no treatment once the clinical signs of rabies appear.

Rabies infection of an animal can only be confirmed after death, through a microscopic examination of the animal’s brain.

How great is the risk of rabies to humans?

Rabies remains a major concern worldwide, killing around 59,000 people every year. Almost all of these deaths are due to rabies transmitted by dogs in countries where dog vaccination programs are not sufficiently developed to stop the spread of the virus.

Rabies vaccination and animal control programs, along with better treatment for people who have been bitten, have dramatically reduced the number of human cases of rabies in the United States. Most of the relatively few human cases in this country have resulted from exposures to bats; any contact with bats, even if a bite was not noticed, should be reported to your physician. Extremely rare cases have resulted from corneal or organ/tissue transplants from an infected donor. Dogs are still a significant source of rabies in other countries, particularly in Asia and Africa, so travelers should be aware of this risk and seek medical advice about vaccination prior to traveling outside of the United States.

What can I do to help control rabies?

Remember that rabies is entirely preventable through vaccination.

• Have your veterinarian vaccinate your dogs, cats, ferrets, and select horses and livestock. Your veterinarian will advise you on the recommended or required frequency of vaccination in your area.

• Reduce the possibility of exposure to rabies by not letting your pets roam free. Keep cats and ferrets indoors, and supervise dogs when they are outside. Spaying or neutering your pet may decrease roaming tendencies and will prevent them from contributing to the birth of unwanted animals.

• Don’t leave exposed garbage or pet food outside, as it may attract wild or stray animals.

• Wild animals should never be kept as pets. Not only may this be illegal, but wild animals pose a potential rabies threat to caretakers and to others.

• Observe all wild animals from a distance. A rabid wild animal may appear tame but don’t go near it. Teach children NEVER to handle unfamiliar animals—even if they appear friendly.

• If you see a wild animal acting strangely, report it to the city or county animal control department.

• Bat-proof your home and other structures to prevent bats from nesting and having access to people or pets.

What if my pet has bitten someone?

• Urge the victim to see a physician immediately and to follow the physician’s recommendations.

• Check with your veterinarian to determine if your pet’s vaccinations are up-to-date.

• Report the bite to the local health department and animal control authorities. Local regulations may require that your pet is confined and isolated for monitoring for signs of rabies.

• Immediately report any illness or unusual behavior by your pet to the local health department and to your veterinarian.

• Don’t let your pet stray and don’t give your pet away. The animal must be available for observation by public health authorities or a veterinarian.

• After the observation period, have your pet vaccinated for rabies if its vaccination is not current.

What if my pet has been bitten?

• Consult your veterinarian immediately and report the bite to local animal control authorities.

• Even if your dog, cat or ferret has a current vaccination, he/she should be revaccinated immediately, kept under the owner’s control, and observed for a period as specified by state law or local ordinance. Animals with expired vaccinations will need to be evaluated on a case-by-case basis.

• Dogs, cats and ferrets that have never been vaccinated and are exposed to a rabid animal may need to be euthanatized in accordance with regulations or placed in strict isolation for six months.

• Animals other than dogs, cats, and ferrets that are bitten by a rabid or potentially rabid animal may need to be euthanatized immediately.

What if I am bitten?

• Don’t panic, but don’t ignore the bite. Wash the wound thoroughly and vigorously with soap and lots of water for 15 minutes, then treat with a disinfectant such as ethanol or iodine.

• Call your physician immediately and explain how you were bitten. Follow the doctor’s advice. If necessary, your physician will give you the post exposure treatment recommended by the United States Public Health Service and may also treat you for other possible infections that could result from the bite.

• If possible, confine or capture the animal if it can be done safely. Once captured, don’t try to pick up the animal. Call the local animal control authorities to collect it. If the animal cannot be captured, try to memorize its appearance (size, color, etc.) and where it went after biting you.

• If it is a wild animal, only try to capture it if you can do so without getting bitten again. If the animal cannot be contained and must be killed to prevent its escape, do so without damaging the head. The brain will be needed to test for rabies.

• Report the bite to the local health department. Prompt and appropriate treatment after being bitten and before the disease develops can stop the infection and prevent the disease.

Pets and rabies vaccine bait

Bait containing rabies vaccine is commonly used for mass wildlife immunizations. The bait does not pose a health risk to you or your pets, but it is best to leave the bait undisturbed.​

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