Yeah...it at least understands what humans say.. not anything complex but.

[The snail did shiver some more when it peers at the curious Ban, and says "Don't.. eat me.." as if it were being served before it hides into its shell. His face expressing a rather intriguing look, Sabo furrows his brows as his as it goes into hiding.]

It's not going to help with its main function if you keep frightening it. [He pouts at Ban in a huff as he snatches back the shelled in snail, looking rather agitated at Ban's interest with his Den Den Mushi. It's a talking snail... but it's still a snail to him. It's able to talk like any other snail in his world!! Is it that weird??]

Don't you have talking animals back in your world?