If she wagged any faster she would take off," one user commented. Another added: “She saw her favorite person twice.” ...

Cute puppy Penny sees her reflection in a mirror for the first time. After discovering her own reflection in the mirror, the ...

Infinite mirrors are a fun party trick, but the physics behind this phenomenon explains why it may not be true. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...