A kid-friendly introduction to invasive animal species. It might not seem like a big deal when a non-native animal species finds its way to a new environment. But it can be! Especially when these species end up destroying the ecosystem in their new neighbourhood! Here are stories of 10 of these invasive species - from tiny cactus moths to ginormous Burmese pythons - from how they got to their current homes (it was always humans who brought them!) to the damage they're causing there. Who knew there were so many 'aliens' living among us? Kids will want to find out more!