If you ask another person what their favorite animal is, the odds are that they’ll mention cats, dogs, cows, wolves, bears, horses, birds, turtles, or even fish. After all, most of the most popular animals are vertebrates or animals with backbones. Although invertebrates like insects, worms, and mollusks go primarily ignored, they’re some of the most abundant animals on Earth! Invertebrates, or animals without backbones, are important creatures that play unique roles in the environment. Although some look less than cute, there are many beautiful and cool-looking ones, too! If you want to learn more about these animals, keep reading!…