In the book Pax there is a character called Runt.Runt is a caring, playful fox who helps Pax survive in the wilderness.  One example is when Runt gave Pax an egg and a worm so Pax could eat it and not starve. One other example is that Runt stood up to Bristle so he could be with Pax.If Runt was not there to help Pax,Pax would most likely to be dead or sick.