March 5, 2026, 2:47 pm | Read time: 7 minutes
Whether a cat is “happy” is often judged by owners based on intuition—it seems alert, eats well, and enjoys cuddling. But is this impression enough to realistically assess its quality of life? A study by the University of Veterinary Medicine Vienna shows that personal assessment captures only part of the actual well-being. Certain factors like age, body condition, or environmental design often go unnoticed—with potential consequences for the cat’s quality of life and health.
Positive Self-Assessment Reveals Gaps
Most people are convinced that their cat leads a good life. It appears alert, moves curiously through the home, and enjoys its food—all seen as signs of satisfaction. However, this assessment seems to fall short. A study by the University of Veterinary Medicine Vienna, to be published in June 2026 in the journal “Applied Animal Behaviour Science” and available online in advance, points this out.
The research team led by Andrea Sommese examined which factors shape cat owners’ assessment of their pet’s quality of life (“Quality of Life,” QoL) and how this subjective evaluation relates to a systematically structured, multidimensional assessment of well-being. In veterinary medicine, the term quality of life is often equated with animal welfare, but it is not clearly defined.
Modern concepts—such as the “Five Pillars Model”—emphasize emotional states alongside physical health. For cats, quality of life includes not only being free from diseases but also having positive experiences, forming social relationships, and having the opportunity to exhibit species-typical behavior. Many research approaches have so far focused primarily on physical health. The human-cat relationship and other factors played little role.
How Do Owners Assess Their Cat’s Quality of Life?
This is where Sommese and colleagues began. The basis of their study was an extensive online survey of 421 cat owners in German-speaking countries, capturing various aspects of cat welfare.
The questionnaire included 81 statements on behavior (e.g., play behavior, aggression), emotional states (e.g., anxious, relaxed), physical appearance (e.g., shiny coat), health status, living conditions, and interactions with humans and other cats.
Owners also rated their cat’s quality of life on a scale from 0 (“catastrophic”) to 100 (“excellent”). This simple assessment was referred to as “QoL_scale” in the study.
In the second step, respondents answered a detailed questionnaire with 54 features on behavior, health, and environment. Based on this, the researchers developed a structured, less subjective assessment of animal welfare. This included six categories: vitality, attention, appetite and enjoyment behavior, negative emotions, healthy appearance, affection, and aggression toward familiar people. This more comprehensive measure was called “QoL_extensive.”
Systematic Analysis Instead of Gut Feeling
The average quality of life rating by owners was 89 points on the scale from 0 to 100. However, the statistical models showed significant differences between subjective assessment and structured analysis. For the simple owner assessment (QoL_scale), primarily visible factors and known illnesses were decisive:
- Visible chronic illness had a negative impact.
- Attention, appetite, and joy had a positive impact.
- Negative emotions like fear or depression had a negative impact.
- The ability to exhibit natural behaviors and independently change areas had a positive impact.
For the structured overall assessment (QoL_extensive), a picture with far more details emerged:
- Older age was the strongest negative predictor.
- Ideal body condition had a positive impact.
- Calm, relaxed human-cat interactions had a positive impact.
- Access to activity areas and promotion of play and engagement also had a positive impact.
Notably, the correlation between both overall measures was weak (r = 0.295; p < 0.001). This means that both methods only partially capture the same aspects of quality of life.
Assessment May Not Match Actual Condition
The evaluation showed that owners primarily considered obvious signals in their initial assessment. If a cat appears lively, curious, or eats calmly, it is quickly attributed a high quality of life. Conversely, animals that seem anxious, withdraw, or clearly show health problems are rated more negatively.
However, the structured analysis revealed a more nuanced picture. Important factors affecting well-being are often overlooked in everyday life. These include gradual changes such as a slow weight gain, decreased mobility, or a decline in play and exploration behavior. Age also proved to be a significant factor: Older cats scored worse in the systematic assessment but were often rated similarly positively by their owners as younger animals.
Such developments are less noticeable, possibly because owners see their pets daily and therefore perceive changes less clearly. Although body condition, meaning overweight or underweight, poses health risks according to scientific data, it could significantly restrict the quality of life.
Environment and Species-Typical Behavior Are Crucial
Calm, relaxed interactions between humans and cats—such as sitting together or gentle petting—were positively included in the objective assessment. It was also particularly relevant whether the animals could exhibit their natural behaviors. Climbing, scratching, exploring, or the ability to control their environment independently had a positive effect. Access to the outdoors also played a role.
These aspects—control over one’s environment and fulfilling species-specific needs—were weighted more heavily in the structured assessment than in the spontaneous assessment by owners. According to the research team, however, they are central to actual animal welfare.
Another finding concerns households with multiple cats. Positive interactions between conspecifics, such as mutual grooming or relaxed lying together, had a positive effect in the structured assessment. However, this connection was hardly reflected in the owners’ initial assessment. Possibly, subtle social signals between cats are less consciously perceived than direct contact between humans and animals.
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Overall, it became clear that initial assumptions and structured data sometimes diverged significantly. For research, this means that a purely subjective assessment is not enough to fully capture cat welfare. The authors argue that a multidimensional approach is necessary to adequately capture the complex well-being of house cats.
They hypothesized that factors such as age, health status, body condition, outdoor access, environmental enrichment, and human-cat interactions influence quality of life—and that a structured assessment could lead to different results, indicating whether our cats are truly happy and healthy.
The study is methodologically well-developed and provides everyday insights, but it carries the risk of subjective biases, as both questionnaires were only completed by owners. Neither veterinary examinations nor direct behavioral observations were included.
Additionally, the sample consisted predominantly of women (90.4 percent) from Germany and Austria. Possible gender-specific differences in the perception of animal welfare were not separately analyzed. Furthermore, 10.2 percent of respondents worked professionally with cats, which may have influenced sensitivity to certain signs.
Concrete Questions for Everyday Life
Those who want to realistically assess their pet’s well-being should consider not only appetite and mood but also weight, mobility options, play opportunities, and the quality of shared time. For veterinarians and behavior experts, the study underscores the value of multidimensional assessment tools to comprehensively capture and improve cat welfare.
For the everyday life of cat owners, the researchers recommend simple observation questions: Is the cat still as agile today as it was a few months ago? Does it show play and exploration behavior with similar frequency? Has its weight changed? Are there enough calm, relaxed moments?
Such regular reflections can help detect gradual changes early and ensure long-term well-being. Because what matters is not just whether a cat appears content, but whether it truly is. 1