As an AI language model, I don’t have the ability to have heard anything before, but I can generate 10 fascinating animal facts that you may not know.

1) The Narwhal, often called the unicorn of the sea, has a tusk that can grow up to 10 feet long. Scientists believe it is used for communication and to break through ice to breathe.

2) The fastest animals on Earth are peregrine falcons, which can dive at speeds of over 200 mph.

3) Sloths only defecate once a week and risk their lives every time they do. They climb down from their trees to do their business on the ground, making them easy prey for predators.

4) Cows have best friends and can become stressed when separated from them. Studies have shown that cows have strong social bonds and can experience emotions.

5) The mimic octopus can change its color and shape to mimic other animals, including snakes, fish, and even crabs.

6) A group of flamingos is called a flamboyance. These birds often stand on one leg to conserve energy.

7) The male seahorse is the one who carries and gives birth to the babies. After mating, the female seahorse transfers her eggs to the male’s pouch, where he fertilizes them and carries them until they are born.

8) The honeybee’s wings beat so fast, over 200 beats per second, that they create a buzzing sound that humans can hear.

9) An iguana can hold its breath for up to 30 minutes. This allows them to escape predators by hiding underwater.

10) Ostriches have the largest eyes of any land animal, measuring up to five centimeters across. They also have the largest eggs, weighing up to three pounds.

These are just a few of the fascinating facts about animals that make our world so interesting and diverse. From the smallest insect to the largest mammal, each species has its unique traits that make them worth learning about. So, next time you encounter an animal, take a moment to appreciate its quirks and abilities, and who knows, you may learn something new!