Smooth-coated otters may be few in the wild but they're thriving in the Singaporean metropolis. Clash of the clans: Beyond a lack of natural predators, these city otters use Singapore's waterways as ...

North American river otters are part of an amazingly diverse group of carnivores called mustelids. The group includes familiar local mammals like minks, weasels and skunks, but also ones you’ll never ...