Meat enthusiasts have long endorsed the “carnivore diet,” a meal plan that includes consuming only animal products such as meat, dairy and eggs.

One of the most majestic birds in the animal kingdom, the scarlet macaw is drenched in hues of red, yellow, and Tuscan blue.

They appeared at dusk. The day was ending in a pink-and-yellow sky when a cub moved in the grass. Its mother appeared next, ...