Reggie, a 7-year-old Great Dane from Idaho, and Pearl, a 4-year-old Chihuahua from Florida, put their (size) differences ...

Just like one commenter said, Pearl is "barely the size of [Reggie's] ear!" This adorable duo met up in Idaho, where the ...

Reggie, a 7-year-old Great Dane who stands at a staggering 3 feet 4 inches, and Pearl, a 4-year-old Chihuahua who measures in ...

There are fewer than 1,000 Bornean elephants left in the wild. Logging and palm oil plantations have destroyed their habitat and conflicts with humans are on the rise. But conservationist Farina ...

Guinness World Records shared video from the historic meeting between the world's tallest living dog -- standing 3 feet, 3 inches tall -- and the world's shortest dog, who stands at 3.59 inches tall.

"25 World's SMALLEST Animals You Won't Believe Are Real" will blow your mind with just how tiny nature can get! From microscopic frogs to mini monkeys, these adorable (and sometimes bizarre) creatures ...

Stories of animals once thought extinct and reappearing after centuries give moments of hope and remind us that nature can be ...

Einstein, the miniature horse who gained international recognition as the world's smallest newborn horse, celebrated his 15th ...

The sun bear, the world's smallest bear species, is known to mimic the facial expressions of others during social ...

A tiny device can be inserted using a syringe and then safely dissolves once it is no longer needed. Engineers at Northwestern University have developed an ultra-small pacemaker that is so tiny it can ...

It proceeded to tell me that the bumblebee bat was the world's smallest mammal. Since I had never heard of a bumblebee bat, I asked it to tell me about it. What I received was a snarky response ...