One common theme is growth. Estel's journey from a young boy to Aragorn is often explored. Another is his connection to the elven culture in Rivendell.
There are indeed some great 'little Estel LOTR fanfictions'. Some might take a different approach and show Estel's dreams and how they might be related to his future as Aragorn. For example, he could have prophetic dreams about battles to come or about the One Ring. These fanfictions can add depth to his character and give us a new perspective on his growth and development in Middle - earth.
It's fiction. In Tolkien's works, Estel, who would later become Aragorn, was part of a complex web of relationships. Dwarves were a proud race, and while there might have been individual skirmishes or disagreements, a full - on fight between a young Estel and a dwarf doesn't fit the overall narrative of cooperation against the greater evil that Sauron represented. Also, Estel was being groomed to be a leader, and fighting dwarves without just cause would go against the ideals he was being taught.
There could be a psychological impact. Estel might develop a fear of wild animals, especially dogs. This could affect how he approaches future encounters in the wild. Also, if the dog was rabid, he could face a serious health risk and need to find a healer quickly.
A matter of pride could also be a factor. If a young Estel, in his growing confidence and sense of self - importance, accidentally offended a dwarf's pride. Dwarves are known for their pride in their workmanship and heritage. If Estel made a comment about dwarf - made weapons or armor that was taken as an insult, it could lead to a fight.
The theme of self - discovery is quite common too. Little Estel might be on a journey to figure out who they are. There could also be themes related to the environment Estel lives in. For example, if it's a fantasy setting, the theme could be about the unique flora and fauna of that world and how Estel interacts with them. Adventure is also a possible theme, with Estel going on exciting quests or journeys.
Well, it might be that in the fanfiction, little Estel is injured while trying to protect her friends. For example, she steps in front of a dangerous spell that was aimed at her companions. And then, her friends have to find a way to heal her, perhaps by seeking a rare herb or the help of a powerful wizard.
Estel could potentially use his knowledge of the wild. Since he is in Middle - earth, he may know some plants that can be used to repel the dog. He might rub some on himself to make the dog less likely to attack. Also, if he has any small knives or tools, he could use them to scare the dog away. He would be very careful and calculated in his movements to avoid getting bitten.
Well, I'm not sure which specific 'little estel lives fanfiction' you might like. You could try searching on popular fanfiction websites like Archive of Our Own. They usually have a wide variety of fanfictions and you might be able to find some related to 'little estel lives' there.