Spider Eagles build webbed nests deep within Mt. Split-in-Half's canyon in order to protect their eggs from predators, making their eggs one of the most difficult ingredients to obtain. They are also known as Dream eggs. The Mt. Split-in-Half canyon has updrafts that help hatched Spider Eagle chicks learn to fly.
- Spider Eagles itself are just mentioned and never seen in the manga or 2011 anime series (only its eggs), but are shown in the 1999 anime adaptation.
- The design of its head includes what looks like a spider on top.