Blink and you ll miss it © SCOTLAND: The Big Picture/Minden Pictures
The mountain hare is doubly hard to catch sight of, because along with its tremendous speed, it"s terrifically well camouflaged. These two traits help the iconic species survive in the rugged mountains and uplands of northern Europe and Asia—this hare is dashing across a heath in the Scottish Highlands. When they have to, these speedy leporids can dart away as fast as 50 mph, at least for short distances, allowing them to outrun predators and disappear safely into the heather. But a would-be predator may not even spy them to begin with—mountain hares change coats, or molt, several times a year, their fur going from brown and gray in summer, to white-gray in winter, helping them to blend into their surroundings whatever the season.