Anyone who has lived with a pet knows how quickly animals notice even the smallest changes. A different routine, a shift in mood or an unusual scent can sometimes trigger behaviour that owners struggle to explain.
Stories of pets reacting to illness have fascinated researchers for years, although scientists are still trying to understand exactly how much animals can detect.
According to PA Media, a young woman from Hampshire believes her family cat began reacting to her illness long before doctors identified what was wrong, reports UNILAD.
Something had changed
As a teenager, Sophie Hilgers started experiencing a range of unexplained health problems. Persistent fatigue, sickness and physical discomfort gradually became part of daily life, but answers were hard to find.
Also read: What science says about the olive oil and lemon trend
Around the same time, her family noticed an unexpected change in Arthur, their usually independent cat. Instead of keeping to himself, he became unusually attached to Sophie, following her around the house and seeking constant contact.
At first, the behaviour seemed strange but harmless.
The dagnosis
After months of worsening symptoms, Sophie was eventually admitted to hospital, where doctors diagnosed her with acute lymphoblastic leukaemia, a form of blood cancer.
She underwent intensive treatment and later entered remission. As her health improved, Arthur reportedly returned to his normal behaviour.
Also read: Is a beard unhygienic? Research provides a clear answer
Years later, however, the pattern appeared to repeat itself. Shortly before doctors discovered that the cancer had returned, the cat once again became unusually affectionate and attentive.
A lasting memory
Following further treatment, including immunotherapy and CAR-T cell therapy, Sophie was eventually declared cancer-free.
Her story joins a growing number of accounts from pet owners who believe their animals sensed illness before a formal diagnosis was made. Researchers have explored whether changes in human scent, body chemistry or behaviour may influence how animals respond, but experts say more evidence is needed before any firm conclusions can be drawn.
Arthur later developed cancer himself and died in 2025. For Sophie, however, the family cat remained a source of comfort throughout some of the most difficult moments of her life.
Also read: Study suggests measles vaccine may offer protection against Nipah virus
Also read: Science reveals what cold showers really do to your body