How does a dolphin prevent itself from drowning during sleep?

Answer: While sleeping, the bottlenose dolphin shuts down only half of its brain, along with the opposite eye. The other half of the brain stays awake at a low level of alertness. This attentive side is used to watch for predators, obstacles and other animals. It also signals when to rise to the surface for a fresh breath of air. After approximately two hours, the animal will reverse this process, resting the active side of the brain and awaking the rested half. This pattern is often called cat-napping. [Source: Scientific American]

Does Von Willebrand disease (VWD) affect men and women equally?

Answer: VWD is more common and usually milder than hemophilia. In fact, VWD is the most common inherited bleeding disorder. It occurs in about 1 out of every 100 to 1,000 people. VWD affects both males and females, while hemophilia mainly affects males. [Source: NIH]


During hibernation, how many times a minute does a bear’s heart beat?

Answer: 8 to 10 times a minute! (Edgar Folk of the University of Iowa monitored the heart rate of a captive bear in Alaska as it slept. In the early fall, its heart beat 40 to 50 times a minute for most of each night. By December, when the bear was deep in hibernation, its sleeping heart rate had slowed to as few as eight beats a minute. [Source: PBS])

How many people with hemophilia currently live in the United States?

Answer: Approximately 18,000 people in the US have Hemophilia. [Source: NHF]


How many miles-per-hour can a lion run?

Answer: A lion can run up to 50 mph for short bursts to catch its prey.

Why is hemophilia called the Royal Disease?

Answer: Hemophilia figured prominently in the history of European royalty in the 19th and 20th centuries. Britain’s Queen Victoria, through two of her five daughters (Princess Alice and Princess Beatrice), passed the mutation to various royal houses across the continent, including the royal families of Spain, Germany and Russia. Victoria’s son Prince Leopold, Duke of Albany suffered from the disease. For this reason, haemophilia was once popularly called “the royal disease”. Tests of the remains of the Romanov imperial family show that the specific form of haemophilia passed down by Queen Victoria was likely the relatively rare Haemophilia B. [Source: Wikipedia]