The San Diego Zoo announced on Wednesday the results of a public poll that determines the names of two sloth bear cubs that were born back in December.

To a layperson, it’s footage of adorable polar bear cubs with their moms against the backdrop of endless Arctic snow. For researchers who study the animals, however, it’s a rare and incredibly ...

How much they weigh: From as little as 60 pounds (27 kilograms) to more than 1,700 pounds (771 kg) ...