Stories about: yawning  

Study finds wolves yawn when they see others of their kind do the same

The commonly held belief is that yawning increases the oxygen supply

The conclusion belongs to a new scientific investigation

The polar bear family was caught on camera while enjoying a midday snooze

Juvenile chimps living in sanctuaries are likely to yawn when they see people doing so

Researchers find dogs often yawn when they see a person doing the same

Scientists cuddle up with puppies for the sake of research, prove this theory

They can mirror pain and other human behaviors

The "virus" is contagious in primates too

The research shows why people yawn when tired