Readers learn about the history of unicorns. Did you know that the Siberian unicorn roamed the Earth during the last Ice Age? Or that people used to make unicorn horns into medicine? Or that technically any creature with one horn is considered a unicorn? That means narwhals, certain antelope, and even shrimp with a horn can be called unicorns! Discover the history of this special creature, and …
Did you know that the blue dragon sea slug is the length of a paperclip but can store deadly jellyfish venom in its body for use against predators? Or that the golden poison dart frog is only an inch long, but its skin holds enough poison to kill ten people? These tiny terrors don't have to be big to be deadly!