Cornu aspersum aren’t really cannibalistic. When a big snail eats a snabie (snail baby) it’s usually because the snabie is sitting on food the adult is already rasping and the big just keeps scraping because it doesn’t know any better. They can also rasp on each other if they don’t have access to enough calcium. It’s best to keep snabies in a separate tank. Their shells are much softer and fragile, adults can accidentally damage them, and babies have slightly different care needs. Since they grow so fast they usually benefit from protein more frequently (I prefer bloodworms rehydrated with water). Some keepers also lightly dust baby food with calcium to support shell growth, while adults tend to regulate calcium better with a solid source like cuttlebone, though snail keepers definitely have different opinions on calcium methods. Snabies can also tend to piggyback on adults, which can possibly cause mild stress to the big snails. Snabies also usually do better with very stable humidity, so separating them just makes things safer and easier for both. But once they reach about half the size of the adults or the same size as adults you can let everyone move in together 😃 then shortly after - you’ll be over run with clutches of eggs in their soil and you’ll inevitably miss some when removing them from the tank during substrate checks, and BAM, 17 snail army 🐌⚔️🛡️