Alter explains to the other two that smaller pumpkins are easier to carry and manage, and that they're supposed to bring several back. Not sure if this is quite clicking with them, though.
Pumpkins can be exchanged for goods and services. http://img.pandawhale.com/post-18342-homer-simpson-20-dollars-oh-I-yiTZ.gif
View more info about the species here: http://dracostryx.deviantart.com/