Shih Tzu is the second favorite dog breed, says survey Ever wondered why peacocks open their tails like this ... These feathers are colorful due to the presence of microscopic structures called ...

Peacocks are majestic birds that capture our imaginations. With brilliant and colorful designs, and enormous feathers, these birds have often been a sign of royalty, pride and beauty. Our next set ...

But bigger is only better up to a point. If peacock trains become too big or too colorful over time, they may no longer confer a selective advantage. Exaggerated trains might attract a new kind of ...