Yawn in the presence of your pooch and they're likely to yawn right back at you, a new study shows.
"We tried to create a comfortable atmosphere in doing the experiment, and sometimes it was so comfortable for them that they fell asleep," said study author Teresa Romero, a research fellow in the department of cognitive and behavioural science at the University of Tokyo.
The study was published online on 7 August in the journal PLoS One.
Although copying a yawn may not sound like such an impressive trick, scientists think it's a sign of something important – the ability to empathise and bond with others.
Measures of empathy
For more insights into animal behaviour, head to the Animal Behavior Clinic at Tufts University.