The arctic fox has the best insulating fur of all mammals.
The arctic ground squirrel hibernates at 26 degrees Fahrenheit (-3 Celsius), the lowest temperature ever recorded in any live mammal. Despite the frigid temperature, it's blood continues to flow without freezing.
The fur of sea otters can have more than 650,000 strands of hair per square inch. It helps to keep them insulated while swimming in cold waters.
1816 is known as "The Year Without Summer." Failed crops caused famines across the globe. The cold weather was caused by a massive eruption of mount Tambora in Indonesia.
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Snow leopards can use their tail as a blanket, wrapping it around their body to keep warm. It's a good thing to have in cold climates where temperatures may dip as low as -40°C (-40° F).
Adult camels can drink 30 gallons (113 liters) of water in just 13 minutes.
The South American Pudu deer is the smallest deer in the world. It measures 60 to 80 cm (23-31 inches) long. It's the only deer that can climb the trees.
Polar bear fur is transparent, it just looks like it's white because it reflects sunlight.
Cloud leopards have spots on their fur that look like clouds.
All scorpions glow under UV light. The Emperor Scorpion in West Africa glows blue or green. UV lights are perfect for finding scorpions in a home.
An ostrich egg equals 24 chicken eggs, and can feed 12 people breakfast. They weigh about 3 pounds (1.4kg).
