Dogs may be able to predict epileptic seizures, according to new research by Queen's University, Belfast.
Psychologists have launched an international survey to examine whether man's best friend can see the warning signs before their owners.
The study, by professor Peter Hepper and PhD student Neil Powell, also aims to examine the impact seizures have on individuals.
Neil Powell said: "Some [respondents] have described their dogs barking agitatedly, staring intensely, trembling or pacing restlessly.
"Other dogs apparently push their noses repeatedly against their owner's leg, or paw them until the owner does something to ensure their own safety."
Anyone with epilepsy is invited to participate in the study by going to http://go.qub.ac.uk/epilepsydogsurvey.