These huge members of the weasel family swim by propelling themselves ... and must be successful often to meet their daily intake quota. Each animal may eat six to nine pounds of food per day.

When monitoring the health of mammal populations, scientists often use camera traps to observe the animals in their habitats. But weasels are so sneaky they're rarely caught on camera—leaving ...

When monitoring the health of mammal populations, scientists often use camera traps to observe the animals in ... a diverse family of carnivores that includes weasels, ferrets and martens.