For Cactus, a Rescue Pup with a beaming smile, his joy was uncontainable when he was reconnected with his feline brother ...

But today is World Smile Day — an entire holiday dedicated to the sole happy mission of spreading cheer and kindness around the globe — and not smiling is kind of not an option.

Sheba was adopted and returned to the shelter twice, but her luck finally changed in July after nearly three years of waiting.

Animals that look happy, smiling, or content are instantly likable. Scientists debate whether those expressions mean anything, but most people don’t stop to question them. These are some ...

LOS ANGELES -- A photo of what appears to be a happy - and smiling - black bear looking over Pasadena, California has become a hit on social media. "I find where I see animal tracks or animal ...