These eggs can be heard making a slight jingling sound as the Vattone inside grows. The louder the more frequent the jingle sounds the closer the egg is to hatching.
Vattones are one of Ark's cold loving creatures. However, they lack a thick fur coat or fat layer to keep them warm. Vattones make up for this lack by creating clothing for themselves. They are one of the very few Ark species who create tools to help them live in their environment. Scientists at the SAR Center have theorized that the Vattone once lived in a warmer climate and migrated to their current habit, forcing them to adapt to survive.