The spines on the Spunny egg become the Spunny's mane upon hatching, and it becomes longer and sharper as the Spunny ages. Female Spunny are attracted to males with longer and more vibrant colors on their manes, so the males always try to take good care of them and groom them frequently. To protect themselves from the sharp manes of other Spunny, they have very thick coats, although this makes keeping cool very difficult as they generally tend to live in warm climates.
Spunny are rather isolated creatures and tend to prefer to keep a distance from Arkians and other creatures. They usually travel alone, as their children become independent immediately upon hatching. Despite being herbivores, they are not hunted, as no creatures would dare the chance of getting caught in the Spunny's dangerous tail!