Tarantulas are large, hairy spiders that are found in various parts of the world. They are popular as pets among arachnid enthusiasts due to their unique and fascinating behaviors. Tarantulas can range in size from a few centimeters to nearly 30 centimeters in legspan. They are known for their ability to molt, or shed their exoskeletons, which allows them to grow and regenerate lost body parts. While many people may fear tarantulas, they are generally not aggressive and are known to be relatively docile, making them great pets for those who enjoy caring for exotic animals.