Is the Egg Cart’n predator-proof?

Nearly. It is predator-resistant, meaning it is resistant to predators, but it takes some proactivity on your part. The daily move and locking the chickens upstairs at night by raising the ramp makes it virtually impossible for small predators to attack the chickens. Snakes could be an issue in some locations, and bears could be an issue in others, but we have been well pleased with the predator protection the Egg Cart’n provides.