The main characters might include the snakes slithering through the undergrowth, looking for a warm place to rest or a small animal to eat. Also, the colorful parrots that add life to the jungle with their bright feathers and loud calls. And not to forget the hardworking ants that are building their colonies and foraging for food.
Perhaps the main characters are a family of tigers. The mother tiger teaching her cubs how to hunt and protect themselves. And also the birds that build their nests high up in the trees, constantly on the lookout for danger. There could also be a sly fox - like character that always tries to outwit others for food.