What are the causes of dog death? Top 10 causes of pet death

Jul 26,2025
10Min

NO.10 Pyometra

For many female cats and dogs, the threat of pyometra is very serious. Unneutered female cats and dogs are prone to pyometra due to bacterial infection and endocrine abnormalities. Pyometra is divided into open type and closed type. The latter is more dangerous. Because the clinical symptoms are not obvious, it is often ignored or misdiagnosed as other diseases. In severe cases, it will affect the operation of the heart and insufficient blood flow to the kidneys, leading to uremia and even death from multiple organ failure.

NO.9 Diabetes

This is an endocrine disease. The clinical symptoms of diabetes in pets are the same as those in humans. There will be three more and one less: eating more, drinking more, urinating more, and losing weight ( few). The scary thing is that by the time visible symptoms appear, diabetes is often in the middle and late stages. In addition to being given high-fiber, low-fat food, sick pets also need daily insulin injections. Pet diabetes often brings about some secondary diseases, such as cataracts, hypokalemia, metabolic acidemia, etc. Treatment requires great patience from the owner and strong financial support, otherwise the condition will get worse. The main cause of pet diabetes is obesity.

NO.8 Pneumonia

The causes of pneumonia in pet dogs are complicated. A large amount of yellow secretion and nasal pus will appear in the nasal cavity of sick pets. In addition to blood tests and X-rays, examination methods can also determine the cause through bacterial culture and drug sensitivity testing. It would be best if aerosol treatment could be provided to help with expectoration.

NO.7 Blood Parasites

Pyrozoonosis is the most serious disease among blood parasites. Pyrococcus is a blood parasitic disease transmitted by ticks. Pyrococcus is a protozoa that can only be seen with a microscope. The parasites parasitize in red blood cells and destroy them, causing hemolysis and severe anemia. Owners should regularly use flea drops or sprays on their pets to repel ticks on their bodies.

NO.6 Dog Heartworm

Heartworm babies (microfilariae) are very small and live in the blood of dogs and cats. Adult worms are about ten centimeters long and live in the heart (right ventricle and pulmonary artery). ), the worm body can fill the entire heart when there are many. The route of infection is through mosquito bites. The older you are, the higher the chance of infection (cats are almost never infected with heartworms, but they can also be infected when their immunity is low). Common symptoms in the early stages of heartworm disease are coughing, decreased mobility, and feeling tired after a short period of exercise. In severe cases, anemia, ascites, asthma, difficulty breathing, etc. may occur. The cure rate was high in the early stage, but the treatment effect was very poor when it was discovered in the final stage because the adult worms had occupied the entire heart. The worms had to be removed one by one through surgery, but the dog's body was not as good as before after the operation. Therefore, we still rely on prevention, regular internal and external deworming and killing mosquitoes. With such strong protection for dogs and cats, there will be no more heartworms~

NO.5 Kidney Problems

The terrible thing about pet kidney problems is that the disease is hidden. When it is discovered, the damage to kidney cells often exceeds 75%. The main cause of kidney disease is insufficient drinking water intake in pets. In addition, many owners often feed their pets human food, which causes the kidneys of cats and dogs to be damaged due to excessive salt burden. Therefore, if your pet has hematuria, changes in urinary habits, or abnormal urine color, seek medical attention immediately. Do not usually feed human food. There are also formula foods to protect kidney health and prescription foods for pets with kidney disease on the market for parents to choose from.

NO.4 Malignant Tumors

In the clinical diagnosis and treatment of veterinarians, malignant tumors in pets are easily overlooked, especially in elderly cats and dogs, which are often simply considered to have died of old age. The most common malignant tumors are reproductive system tumors. Neutering can greatly reduce or even eliminate the incidence of reproductive system tumors, such as breast tumors, pyometra/tumors, ovarian abscesses/tumors, etc. in the cat and dog sister, and prostate cancer, testicular tumors/cancer, etc. in the cat and dog brother.

No. 3 Accidents

Cats and dogs are very curious and love to explore everywhere. Common fatal accidents include car accidents (call you without a leash?) and falls from heights (call you Not closing the doors and windows?), being crushed by heavy objects (asking you not to put away the items at home?), electric shock (asking you not to hide the wires?), heat stroke, food poisoning (asking you not to hide the food? Asking you to feed them indiscriminately) Human food?), venomous snake, venomous bee bites, chemical poisoning (asking you not to hide disinfectants and detergents?), etc. Most of the time, it is because the family ignores the child's curious personality and likes to rummage around the house, and fails to hide the "dangerous items" in the home, resulting in a seemingly safe room that is "perilous". It can be said that the parents are to blame for the death of their pets due to accidents, and are committing the crime of "pet neglect"~! Heat stroke (commonly known as heat stroke and sunstroke together) is the most easily ignored cause of death. Heat stroke refers to a disease in which the ambient temperature is too high and the body's heat dissipation is poor, resulting in a pet's temperature regulation dysfunction, excessive accumulation of heat in the body, and an increase in body temperature, even exceeding 40°C, resulting in damage to the nervous system. Sunstroke is a disease in which a pet's head is exposed to direct sunlight for a long time, causing the temperature of the head and body temperature to rise sharply, leading to abnormal mental state and secondary organ dysfunction. Once a pet suffers from heat stroke, if proper cooling is not carried out in time, it will soon die from multiple organ failure.

No.2 Fat into a ball

According to the clinical experience of pet hospitals, it is found that about 1/3 of pets are excessively obese. The main causes of obesity are feeding high-calorie foods or snacks to please pets, as well as insufficient space for activities and insufficient amount of exercise given by owners. There may also be other physical or psychological reasons, such as insufficient thyroid hormone, behavioral changes, etc. But the most important thing is the owner’s unreasonable feeding andIt is caused by distorted aesthetics (thinking that the half-month, half-month, and round forms are cute).

No.1 Infectious Disease

There is no doubt that the number one disease is the abominable infectious disease! Common fatal malignant infectious diseases include canine distemper, canine parvovirus, feline distemper, feline rhinorrhea, etc. Deaths from these diseases are mainly caused by owners failing to immunize their pets and allowing pets to come into contact with sick dogs and cats. It is recommended that pets be vaccinated regularly. If there are new cats or dogs in the family, remember to ask a doctor for a health check or isolate them for a period of time for observation before integrating them into the family.
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