Genetics - do they recognize their young?

[GailTheSnail]

Something I’ve been wondering for a while now is if snails (specifically Helix Aspersa/Coru Aspersum) can recognize when they come into contact with another snail, whether baby or adult, that is genetically theirs?

I’ve looked for studies and couldn’t find anything. What’s your experience or have you come across anything proving one way or another?

[footloose]

Maybe they can, by scent, as they have a well developed sense of smell. Have noticed snails that are related will greet each other by mingling their eyestalks, and face touching. I think it's cute how peaceful they are towards different ages and sizes of their own kind. Adults could easily eat the juveniles, but they crawl right past them, allow them a ride on their shell, etc.

[footloose]

Or they have a secret "handshake", unique to their snail tribe.