Well, Naruto's life would be filled with more love and warmth. The puppy would be like a family to him. He would need to create a safe space for the puppy at his place. He might even start taking the puppy to places in Konoha that he loves, like the ramen shop. The puppy would also give Naruto a sense of purpose outside of being a ninja. He would be responsible for another living being, and this could make him grow as a person in terms of empathy and patience.
His daily routine would be quite different. Instead of just focusing on ninja training and missions, he now has to make time for the puppy. He might start training the puppy to be a sort of 'ninja - dog' too. This would add a new aspect to his life and he would have to balance his duties as a ninja and a pet owner. And his friends might start coming over more often just to play with the puppy, which would bring more social interactions to Naruto's life.
Naruto's life in the 'naruto gets a clan house fanfiction' would change in many ways. Firstly, he'd have more space to relax and unwind. He could also use the clan house to hold important meetings with village leaders. It would be a place where he could show his growth and status. Also, he could use it to honor his parents and their legacy. He might display pictures or items related to them in the clan house, making it a place full of family history.
His life would become more domestic. He would have to worry about things like feeding the cat and cleaning its litter box. Also, he would have a constant companion at home, which would make his place feel more like a home rather than just a place to sleep.
Naruto's relationships would be different. He would have a father - figure in Jiraiya. Jiraiya could also introduce Naruto to new friends and allies. And Naruto would have more time to learn about his family and the secrets that Jiraiya might know about the Uzumaki clan. This could give Naruto a stronger sense of identity and purpose.
In this fanfiction, Naruto might name the puppy after one of his friends. Maybe he takes the puppy on his ninja missions and the puppy ends up being really helpful, like sniffing out traps or finding hidden enemies. It could also be that the puppy has some special abilities, like being able to communicate with Naruto telepathically.
The nin dog could change Naruto's life by making him more responsible. Since he has to take care of the dog, he'll have to think about someone else's needs. For example, he'll need to make sure the dog is fed, trained, and healthy. This will give him a new sense of purpose outside of his normal ninja training and goals.
His power level would skyrocket. He could get access to Kami's knowledge and abilities, which would make him extremely powerful in the ninja world.
His relationship with Sasuke could be affected. Sasuke might be intrigued or even jealous of Naruto's new weapon. This could lead to new rivalries or, on the other hand, a new level of respect between them.
A Border Collie might also be a possibility. These dogs are extremely intelligent. Stiles would have a great time teaching it all kinds of tricks. The Border Collie could also help Stiles in some way, like herding or using its intelligence to solve problems that Stiles might face. It would be a very active and engaging puppy for him.
His life would change drastically. He'd be surrounded by magic instead of ninjutsu. He might go to Hogwarts and have to study subjects like Transfiguration and Defence Against the Dark Arts. His daily routine would be completely different, from waking up in a dormitory to having meals in the Great Hall. He'd also have to follow the wizarding laws, which are very different from the laws in the ninja villages.
His personality would be a mix of his old self and the influence of being a ghoul. He would still be the brave Naruto who wants to protect his friends and village. But at the same time, he'd have to constantly fight the more primal and aggressive instincts that come with being a ghoul. This internal struggle could make him seem moodier at times, as he tries to balance his two natures.