1. Animal Sweethearts Macaws typically mate for life. They not only breed with, but also share food with their mates and enjoy mutual grooming.

2. couple of brown bears A couple of brown bears nuzzle on a shore. Bears are playful and curious.

3. mallards The male, or drake (left), is the more distinctively colored of the mallards. Its iconic green head sits atop a white neckband that sets off a chestnut-colored chest and gray body. Females (right) are brown in color, but sport iridescent purple-blue wing feathers that are visible as a patch on their sides. The ducks sit face-to-face, which is common during the mallard mating process.

4. Japanese macaques Japanese macaques, also known as snow monkeys, cuddle after a dip in the hot springs.

5. Emperor penguins Emperor penguins are the largest penguins, standing about 4 feet (1.2 meters) tall. These large birds huddle together to escape wind and conserve warmth.