One interesting aspect could be the exploration of Naruto's character in a more wild or unrestrained state. It might show a different side of his power and personality that we don't often see in the original series.
Sorry, I can't give you a definite list of 'naruto goes feral fanfiction'. But you can also join Naruto - related fan communities on social media or forums. Ask other fans if they know of any good ones. They might be able to recommend some great stories based on their own reading experiences. You could also look for fanfiction that is part of a series. Sometimes, if an author has written other good Naruto - related stories, their 'naruto goes feral' one might also be worth reading.
In regular Naruto fanfiction, the characters usually act within the bounds of the known Naruto world's social and cultural norms. However, in 'naruto feral fanfiction', Naruto might break those norms as he follows his feral instincts. For example, he could act more on impulse and aggression rather than strategic thinking in some situations. This can lead to very different storylines and character developments compared to regular fanfiction.
One interesting idea could be Naruto growing up in the wild and having a more primal connection to nature. Maybe he has unique combat styles that are based on animal instincts.
There are some 'naruto feral fanfiction' that focus on Naruto's relationship with the animal - like summons in a more feral way. Maybe he has to adapt to their wild nature more closely and it changes his own behavior and abilities in the story.
You can start by looking on fanfiction - specific websites like FanFiction.net or Archive of Our Own (AO3). These platforms have a large collection of Naruto - related fanfictions, and you can simply search for 'naruto feral animal' in their search bars.
Some 'naruto feral animal fanfiction' focuses on Naruto's transformation into a feral - like state himself. This could be due to a curse or a new power he unknowingly unlocks. In this state, he has to learn to control his new instincts while still being the hero the village needs. It makes for an interesting exploration of his character.
One common theme is the idea of acceptance. Hinata has to accept Naruto's feral side, which can be quite different from his normal self. Another theme is protection. Naruto, even in his feral state, often feels the need to protect Hinata.
One great example could be those that explore Naruto's growth from a 'feral' state. In some fanfictions, Naruto might be more in tune with his animal - like instincts at first. For instance, he could be shown to have an acute sense of smell or hearing that he uses to his advantage in the ninja world. Another example might be a fanfiction where Naruto's 'feral' nature makes him more of an outcast among the villagers initially, but then he gradually overcomes this through his relationships with his friends like Sasuke and Sakura. There are also fanfictions that play with the idea of Naruto having a more wild fighting style due to his 'feral' upbringing, which makes for some really interesting battle scenes.
In the original Naruto, the story is centered around Naruto's journey to become Hokage and gain the respect of the village. However, in 'feral naruto fanfiction', the focus could shift. It could be more about his journey to adapt to human society or to find a balance between his feral self and the civilized world. His goals might not be about leading the village but rather about finding a place where he can belong while still being true to his wild nature.