A group of monkeys might be the main protectors. Monkeys are known for their agility and intelligence. They could swing from tree to tree, launching surprise attacks on Naruto's foes. They could also use their knowledge of the forest terrain to lead Naruto to safety.
Foxes are quite common. Given Naruto's connection with the Nine - Tailed Fox, it makes sense that in fanfiction, he might be able to control other foxes. They can be used for scouting or as distractions in battles.
A fanfiction could involve Sakura finding an injured animal during a mission. She uses her medical skills to heal it. The animal turns out to be a magical creature that can transform into different forms. It then decides to stay with Sakura and helps her in her battles against the Akatsuki, using its special powers.
In some Naruto fanfictions, Naruto might absorb animals through special jutsus or abilities. For example, he could have a unique kekkei genkai that allows him to take in the essence or chakra of animals. It could also be related to some sort of pact or bond he forms with the animals, which then enables him to absorb their powers.
Well, in this 'naruto god of animals fanfiction', perhaps Naruto is seen as a protector of all animals in the Naruto universe. He might gain new jutsu or powers that are based on different animals' characteristics. For example, he could have the speed of a cheetah, the strength of a bear, and the stealth of a panther. This would make him an even more formidable ninja and give him a unique role in the story, different from his normal ninja duties. It could also involve him forming special bonds with certain animals that help him in battles or in solving mysteries within the Naruto world.
Well, it could be that in the fanfiction world, Naruto has a special bond with nature spirits which gives him the power to control animals. He might have to enter a trance - like state to connect with the animals' minds and then be able to order them around. For example, he could use this power to make birds act as spies or have wolves guard a certain area.
In fanfiction, when Naruto absorbs animals, it might lead to a change in his personality. If he absorbs a predator like a wolf, he could become more aggressive or assertive. On the physical side, his body might adapt to the absorbed animals' traits, which could cause some difficulties in his normal ninja activities at first. Socially, some people in the Naruto world might see him as a freak or a powerful new threat, depending on their views.
Well, it can change the flow of battles a great deal. For example, in some fanfictions, Naruto can use his animal - controlling ability to summon a horde of powerful animals to fight against enemies. This gives him an edge in combat and can turn the tide of a losing battle.
Well, Naruto is the main character for sure. However, there could be new characters introduced specifically for this fanfiction. There might be a group of animal - like ninjas who either oppose Naruto or join forces with him. There could also be a mysterious figure who has some knowledge about the 'god of animals' power that Naruto has acquired. This person could be a mentor - like figure or a potential villain. And of course, the various animals that Naruto has a connection with in this fanfiction would also be important characters, each with their own quirks and significance to the story.
Crows are also often seen. Crows are intelligent and can be used for spying or sending messages. Naruto in fanfiction might control them to gather intelligence on his enemies. And they can be very stealthy, flying around unnoticed most of the time.