There are many main animal characters. Dogs are quite common. They are often portrayed as loving and protective. Cats also make appearances, usually as curious and independent creatures.
One popular character is Sammy Jay, the blue jay. He is known for his noisy and sometimes mischievous nature. Another is Reddy Fox, who is often up to no good, trying to catch the smaller animals for his meal but usually getting outwitted in the end.
There are often squirrels as main characters. They are very active and curious, always running around the trees and exploring. Also, rabbits are common, with their cute appearance and sometimes a bit timid nature.
Some common animal characters in stories are foxes. They are often depicted as sly and clever. For example, in many fables, the fox outsmarts other animals. Another is the wolf, which can be portrayed as menacing, like in 'Little Red Riding Hood'. And of course, the rabbit is also very common. It usually represents timidity and speed, such as in the story of 'The Tortoise and the Hare' where the hare is initially overconfident because of its speed.
It could be lions too. As the king of the jungle, lions often protect their pride and their territory. So in 'the guardian animal stories', they could be important characters. They are strong and fearless, and their actions in protecting their group can be very interesting to read about.
Another important main character is the owl. The owl is often depicted as a wise creature. In the stories, it gives advice to other animals or uses its wisdom to solve some problems that occur in the forest.
The main characters could be the various animals. It might be the lions as the strong and majestic ones. They could be leading the other animals in some sort of adventure or just ruling over their part of the animal kingdom in the stories.