Giant African Land Snail

"Achatina fulica" is not good to be edible and is a vector of meningitis (caused by "Angiostrongylus cantonensis"). But it was used to replace the escargot erroneously in Brazil, at the time of colonization.
The adults of the species reaching up to 18cm shell length and weigh up to 500g. In southwestern Brazil, they arrive within 10cm shell and 100g total weight. Young people have the same basic shell of adults.