Does My Dog Know I'm Dying?

People who are seriously ill often notice their dog staying close, or acting differently. It is natural to wonder whether the dog knows. This article looks at what science has found. The honest answer is that no one has tested this directly.

Can dogs smell illness?

Trained dogs can sometimes detect disease by scent, but the evidence is uneven. A 2022 systematic review of 62 studies of dogs and rats found that sensitivity and specificity varied a lot. Some studies reported low sensitivity of 0.17 and specificity around 0.29, while others reported perfect scores. Only six studies were done in a double-blind, screening-like setting, risk of bias was high in most, and the quality of evidence was low. The authors note that no single disease-specific scent compound has been identified. An earlier review found examples of both success and failure. Dogs detected breast cancer from breath with 88 percent sensitivity and 98 percent specificity, and lung cancer from breath with 99 percent for both, but only 22 percent sensitivity from breast cancer urine samples.

Do pet dogs notice illness on their own?

Sometimes, according to reports. A 2017 review says there are several anecdotal reports of dogs spontaneously showing interest in a skin cancer on their owner, which was later confirmed to be a malignant melanoma. These reports suggest the dogs were attracted to compounds from the affected skin. They are anecdotes, and many dogs never do this.

Do dogs know when someone is dying?

There is no direct evidence. No study has examined pet dogs’ behavior around dying owners. A dog may notice changes in smell, breathing, movement, or routine, and may stay close. But whether the dog understands that death is approaching is unknown. For what we know about animals and death more broadly, see Do Animals Understand Death?.

What happens when another dog dies?

Many dogs change. IFLScience reports a 2022 study in Scientific Reports, which suggests the behavioral and emotional changes of dogs after another dog in the home dies could be interpreted as grief. Canine Journal says that over 85 percent of owners in 426 multi-dog households noticed changes, including more clinginess, less play, and longer sleep, and that a 2016 survey found 75 percent of owners noticed at least one change. These are owners’ reports, and a summary from Hemopet notes that researchers worry that owners may be projecting their own grief onto their dogs.

Should my dog be near me if I am seriously ill?

That is a personal and practical choice. If you are in hospice, ask the care team about pets and what they recommend. For what happens afterward, see Should a Dog See Its Owner After Death? and Losing a Pet.