Yawning is observed not only in humans but also in animals and birds. Yes, chimpanzees, hippos, parrots, dogs, cats, etc., all yawn. Yawning is part of our daily life & an average adult yawns 20 times daily. Oscitation is another name for yawning. This article will tell you why we yawn and why yawning is contagious. There is no specific reason why we yawn and why it's … [Read more...] about Why Do We Yawn & Why Is Yawning Contagious?