Cats, rabbits, and goats may seem harmless, but they're actually invasive species! These animals are just some of the mammal invaders covered in this engaging educational text. Age-appropriate language makes learning about ecosystems easy and fun, while bright, colorful photographs help readers visualize the invasive animals covered and the threat they pose. Informative fact boxes will further help readers identify invasive mammals in habitats around the world, including their own backyard.