Dr. Bethany Hsia
March 31, 2024
A natural death is one that occurs as a result of the disease process or failure of one or more major body systems. It is important to note that a natural death can be assisted or unassisted. Join us as we explore both, discuss the stages of natural death, and an alternative way to say 'goodbye' to your dog.

The time it takes for a dog to die naturally depends on various factors, including age, underlying health conditions, and overall care. Some of those factors include:
As unpleasant as it can be to think about the end of a beloved companion’s life, understanding the stages and potential timeline of the natural dying process can help families know what to expect should they choose to allow a natural death for their dog.
If you're dealing with this situation, make sure to speak with a vet. Read on to learn more about natural death in dogs and when euthanasia may be right for you.
Recognizing when your dog is nearing the end of life can be difficult, but several signs indicate their health is declining. While every dog’s experience will be different, some common signs of a dying dog include:
As with people, end-of-life pet deaths either occur without medical intervention (natural) or with medical intervention (assisted.) While similar, there are some key differences.
A natural death occurs as a result of disease or failure of one or more major body systems. It is important to note that a natural death can be assisted or unassisted.
An unassisted death will vary widely depending on the disease process at play but will likely involve great suffering. In the wild, animals who are reaching the end of their life won’t usually have the opportunity to die from their body failing. More often, they succumb to dehydration or exposure, if not predation. For a pet that is sheltered from such agents of Mother Nature, death can occur more slowly but also with prolonged suffering. This is not a humane option.
An assisted natural death is one where a patient can be kept reasonably comfortable, and their symptoms can be managed while they move through the dying process. Such care is usually referred to as hospice or palliative care, where the goal of treatment is comfort rather than cure. It is important to note that not all diseases allow for this type of palliative death. For example, if the pet is suffering from a disease that affects the respiratory system, such as Congestive Heart Failure, or one that bears a risk of bleeding out, such as a ruptured Hemangiosarcoma, a palliated natural dying process is not a humane option.
Assisted death, commonly known as euthanasia, is a medically facilitated process to end a dog’s life in a humane and painless manner. This decision is typically made when a dog is suffering from a terminal illness, severe injury, or a significant decline in quality of life with no hope of recovery. Veterinarians use medications to ensure the process is peaceful and free from distress.
Euthanasia is often chosen to prevent prolonged suffering. Unlike natural death, which can be unpredictable and painful, assisted death allows pet owners to provide a controlled and compassionate end for their beloved companion. The procedure typically involves administering a sedative to relax the dog, followed by an injection that peacefully stops the heart.
Choosing euthanasia is never easy, but it is often considered the most humane option when a pet’s pain and discomfort outweigh their ability to enjoy life. It allows owners to say goodbye in a calm, loving environment, ensuring their dog does not suffer unnecessarily.
There are three general stages of natural death that a dog will experience. However, they are not always distinct. Stages may overlap and progress at different rates depending on the individual dog’s circumstances.
The pre-active phase refers to the period leading to the active dying process. During this stage, dogs may exhibit subtle changes in behavior and physical condition. They may become more withdrawn, lose interest in activities they once enjoyed, experience changes in appetite, show signs of fatigue, weakness, or restlessness, and have difficulty maintaining normal bodily functions. The duration of this phase can vary from a few days to several weeks.
The active dying phase is characterized by more pronounced changes in a dog’s physical and mental state as organ functions fail and toxins build up in the blood. Dogs receiving palliative care may not display pronounced signs of this stage, but the unassisted death of a beloved dog can be very difficult to witness. Dogs in this phase may exhibit extreme weakness, difficulty breathing, decreased responsiveness, disorientation, loss of bladder and bowel control, nausea, vomiting, and unregulated body temperature. Dogs in the active dying phase may also experience seizures or uncontrolled muscular activity. This phase may also include barking or vocalizing without an obvious cause or intent to communicate. The active dying phase typically lasts a few hours to a few days.
The terminal breath phase is the final stage of the dying process in dogs. During this phase, breathing patterns may become irregular, shallow, or labored. The dog may take long pauses between breaths or experience periods of rapid breathing. This phase can last anywhere from a few minutes to several hours.
Natural death comes with a variety of pluses and minuses. Here are a few examples.
Potential for Prolonged Suffering: A natural death can be slow and painful, especially for dogs with terminal illnesses.
Assisted death comes with a variety of pluses and minuses. Here are a few examples.
When considering euthanasia for your dog, it is helpful to take stock of their quality of life in an objective manner. This may be easier said than done. Begin by honestly asking yourself:
However, if your answers to the above questions are “no,” then it’s probably time to consider what is most important to you regarding end-of-life care for your dog. Will you provide palliative or hospice care to support your pet as they move through the dying process? Will you arrange for euthanasia, and if so, what type of goodbye will best suit your family? How will you memorialize your pet and honor their memory? There aren’t right and wrong answers here; the important thing is to discuss your options with your veterinarian and formulate a plan that you are comfortable with.
If you’re still unsure, using tools to assess your dog’s overall physical and mental well-being will generate a numerical value you can track over a period of time. Keep in mind that the decision to pursue at-home euthanasia for your dying dog is a deeply personal and challenging one. By considering factors such as your dog’s quality of life, emotional well-being, and the support available to you, you can make an informed decision that is most appropriate for both yourself and your pet.
Natural death in a dog implies that the dog in question passed away because of natural causes from within the body.
When considering euthanasia for your dog, objectively assessing their quality of life is crucial, though difficult. Key factors include their ability to eat, drink, and stay comfortable without excessive suffering.
Deciding on end-of-life care for your dog is deeply personal. For additional guidance on recognizing the signs and determining when euthanasia might be the right choice, explore our detailed guide: How Do I Know When It's Time.
You may also benefit from understanding more about senior pet health and comfort strategies detailed in our guide on Senior Pet Care.
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