Did you know a beaver's iconic orange front teeth are reinforced with iron, which makes them incredibly tough and resistant to wear ? (Because their teeth never stop growing, they chew on wood constantly to keep them properly filed down.)

Did you know beavers possess special glands called castor sacs that secrete a fluid called castoreum and combined with their urine, they use this to mark territory ? (Historically, the U.S. Food and Drug Administration approved castoreum as a safe natural food flavoring, and it was famously used to add vanilla and raspberry flavors to treats. It was also used as a additive to some perfume products.)

Did you know beaver dams can grow to astonishing sizes over time and the largest known beaver dam is located in Wood Buffalo National Park in Alberta, Canada, and stretches just under 3,000 feet (about half a mile) long ?

Did you know there are exactly two extant (living) species of beavers: the North American beaver and the Eurasian beaver ? (While there are only two surviving members of the family Castoridae today, the semi-aquatic rodents have a deep evolutionary history. The North American and Eurasian species look very similar but differ slightly in their genetic makeup, skull shape, and tail width. It is estimated that roughly 30 different genera of beaver once existed.)

Did you know while many people think beavers use their signature flat tails to pack mud, they actually use their hands/paws for that ? (The tail serves many other purposes: it acts as a rudder while swimming, a counterweight on land, a fat-storage reserve for winter, and an alarm system to slap the water and warn the colony of danger.)