Quality of Life in Dogs with Hepatocellular Carcinoma
Understanding quality of life in dogs can help provide context for changes over time and support more informed discussions with your veterinarian.
Quality of life is an important – and often difficult – part of caring for a dog diagnosed with hepatocellular carcinoma (HCC). While medical findings such as imaging results and laboratory values provide important clinical information, they don’t always reflect how a dog is feeling or functioning day to day.
A variety of approaches may be used when considering a dog’s comfort, daily function, and overall well-being. The sections below describe different ways quality of life may be discussed, along with selected resources that offer additional context.
Because every dog and situation is different, there isn’t a single measurement or threshold that defines quality of life. Instead, it is usually considered over time and in the context of each individual dog, and is best discussed with a veterinarian.
Published: April 28, 2026
OverviewUnderstanding Quality of LifeQuality of Life ResourcesWhat to ObserveWhat You'll Find Here
This page brings together different ways quality of life may be approached and assessed in veterinary medicine, along with selected resources that offer additional perspective.
The goal is to provide context, support observation, and make it easier to have informed conversations with your veterinarian.
The information here is educational and not intended to replace veterinary guidance. Decisions about a dog’s care are deeply personal and should be made in consultation with a licensed veterinarian who understands the individual case.
Understanding Quality of Life
Quality of life is generally viewed as a combination of factors rather than a single measurement. Considerations may include aspects such as physical comfort, appetite and hydration, energy level, mobility, and behavior, as well as the presence of clinical signs such as vomiting or discomfort.
Quality of life may change over time – sometimes gradually, sometimes more quickly – and is not a fixed state that can be defined as simply “good” or “bad.”
In many cases, it may be helpful to consider whether a dog is still able to engage in activities and behaviors that are familiar or meaningful to them, such as eating, going for walks, playing, or interacting with family members.
No Single Best Approach
There is no single approach to evaluating quality of life in dogs that is universally best in every situation.
Different veterinary professionals and organizations may use different tools or frameworks, and each approach may focus on slightly different aspects of a dog’s condition. Some tools use structured scoring systems, while others provide more general guidance for observation.
In practice, this means:
- No single tool can fully capture a dog’s overall condition
- Different approaches may be used in different clinical settings
- Interpretation depends on the individual dog and medical context
Quality of life tools can be helpful in supporting assessment, but they don’t replace broader clinical judgment that takes into account the dog’s overall situation.
Factors That May Be Considered When Looking at Quality of Life
Appetite and Hydration
Whether a dog is eating and drinking normally, or showing changes in interest in food or water.
Energy and Activity
Changes in willingness to move, go for walks, or engage in normal routines.
Comfort
Signs of pain, restlessness, or difficulty settling comfortably.
Mobility
Ability to stand, walk, and change positions.
Behavior and Interaction
Level of engagement with family members, surroundings, and activities that are familiar or meaningful to the dog.
Gastrointestinal Signs
Presence of vomiting, diarrhea, or signs of nausea.
Quality of Life Resources
The following resources reflect different ways quality of life may be considered and discussed in veterinary contexts, each offering a slightly different perspective.
Considering Your Pet’s Quality of Life in the Midst of Disease
A resource from the Colorado State University Veterinary Health System that discusses ways to think about and observe quality of life over time. It includes suggestions such as identifying meaningful activities, tracking good and bad days, and keeping a journal to reflect on changes.
Visit resourceHow to Assess Your Senior Pet’s Quality of Life
A resource from the American Animal Hospital Association that discusses quality of life in senior pets, including factors such as appetite, comfort, cognitive function, and overall engagement.
Visit resourceHow Will I Know? Assessing Quality of Life and Making Difficult Decisions for Your Pet
A resource from the Ohio State University Veterinary Medical Center Honoring the Bond Program that discusses quality of life in the context of end-of-life decision-making. It includes a worksheet adapted from several veterinary frameworks for evaluating quality of life.
Visit resourceQuality of Life at the End of Life for Your Dog
A VCA Hospitals article that discusses quality of life in dogs and explains the HHHHHMM scale developed by veterinary oncologist Dr. Alice Villalobos, including categories such as hurt, hunger, hydration, hygiene, happiness, mobility, and more good days than bad.
Visit resourceUsing Quality of Life Tools Thoughtfully
Quality of life tools and frameworks can be helpful, but they are not meant to provide definitive answers on their own.
When using these tools, it may help to keep in mind:
- A score or checklist cannot replace veterinary judgment
- Observations are subjective and may vary from person to person
- A single day may not reflect the overall picture
- Patterns over time are often more meaningful than individual entries
Quality of life tools are often most helpful when used to support ongoing conversations with your veterinarian and when considered alongside patterns in a dog’s day-to-day life over time.
Quality of Life: What to Observe Over Time
It may be helpful to pay attention to a few key areas over time, especially when changes may be gradual or easy to miss from day to day.
The following points reflect the areas discussed above and are intended to support observation and conversations with your veterinarian, rather than serve as a checklist or scoring system.
Appetite and Interest in Food
Changes in appetite may be one of the more noticeable indicators of how a dog is feeling day to day.
Questions to consider:
- Has their appetite changed recently?
- Are they eating consistently, or showing less interest in food?
Energy and Daily Activity
Energy level can influence how a dog engages with their normal routines and environment.
Questions to consider:
- Are they participating in their usual activities?
- Do they seem more tired or reluctant than usual?
Comfort and Rest
Comfort may be reflected in how easily a dog can settle, rest, and sleep.
Questions to consider:
- Do they appear comfortable when resting?
- Are they able to relax in a way that seems normal for them?
Mobility
Mobility can affect a dog’s ability to move through their environment, perform daily activities, and maintain normal routines, including bathroom habits.
Questions to consider:
- Have you noticed any changes in how easily they move?
- Are they able to stand and walk without difficulty?
- Are they able to move comfortably to go outside or maintain their usual bathroom habits?
Behavior and Interaction
Behavioral changes may reflect how a dog is feeling physically and emotionally, including changes in awareness, interaction, or daily habits.
Questions to consider:
- Are they engaging with family members as usual?
- Do they seem more withdrawn or less interested in interaction?
- Have you noticed any changes in their awareness, routines, or behavior?
Gastrointestinal Signs
Gastrointestinal symptoms may affect both comfort and overall well-being.
Questions to consider:
- Have you noticed vomiting, diarrhea, or signs of nausea?
- Are these symptoms occasional or becoming more frequent?
Enjoyment of Familiar Activities
Interest in familiar activities can be an important part of overall quality of life.
Questions to consider:
- Are they still interested in activities they previously enjoyed?
- Are they able to participate in those activities?
Important:
These observations are not a substitute for veterinary assessment, but they may provide helpful context when discussing your dog’s quality of life with your veterinarian.
Appetite is one part of how quality of life may be observed, and may also come up in discussions about nutrition. For more on this topic, see our pages on nutrition in canine HCC and nutrition resources for dogs with HCC.
Final Thoughts
Quality of life is a deeply individual and evolving part of a dog’s experience, and it may become an important focus when conditions such as hepatocellular carcinoma are present.
Because each dog, family, and situation is different, there is no single definition or formula that applies in every case. Discussions about a dog’s well-being may take into account clinical findings, observed changes, and the dog’s overall situation.
Tools and resources like those included here can help support these conversations, but they are only one part of a broader, individualized assessment.
If you have concerns about your dog’s comfort or quality of life, discussing your observations with your veterinarian is an important next step.