Yukichi is depressed again today, thinking about all the problems with his owner, Saku. How can an adult human who can't even separate trash make it through life? Doing this and that, Yukichi takes care of Saku's daily life.
In other words, they are 
in the same family as snails.
Einfach ausgedrückt sind sie
Verwandte der Spiralmuscheln.
Tiene una marca en forma de espiral.
Tiene una marca en forma de espiral.
Ce sont donc
des sortes d’escargots.
In altre parole,
sono imparentate con le chiocciole di terra.
Em outras palavras, são
da mesma família dos caracóis.
Они принадлежат к тому же классу,
что и улитки.