Identifying Cow Caribou
Broadside
Without seeing the caribou urinate, the absence of a penis sheath is the most reliable way to identify a cow caribou when broadside. In winter, long hair on cows can resemble a penis sheath. Udders on a cow can also be confused with testicles from behind and / or a penis sheath when viewed from the side. If the animal is angled away, look for the dark vulva and the shape of the rump patch.
A cow (left) and calf (right). Note the absence of a penis sheath.
A cow. Again, note the absence of a penis sheath.
Rear
Cow caribou usually have wide, rectangular rump patches. Look for a dark spot (vulva) below the tail. Note that not all caribou have dark vulvas.
Left: unable to discern. Wait for a better look. Right: a cow. Note the vulva (though it is not dark) and wider rump patch.
A cow. Note the dark vulva and wide rump patch.
