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.
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.
Naruto could use his shadow clones. He could create a bunch of clones to confuse Anko and then make his escape. This is a classic Naruto move. He might also use his Rasengan if he has enough time to prepare it. The Rasengan is a very powerful jutsu that could potentially fend off Anko's attacks.
He could use any nearby objects as weapons. For example, if there are sticks, he can use them to fend off the crabs. Or if he has a net, he can try to catch and throw the crabs away from him.
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.
In some fanfictions, Harry might use his quick thinking and knowledge of magic laws. He could present evidence clearly, like memories in a Pensieve to prove his innocence. For example, if wrongly accused of using dark magic, he could show how the situation was misinterpreted by bringing witnesses who saw the real events.
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.
Well, he could use the power of friendship. Maybe with the help of his friends like Hermione and Ron, they come up with a plan. They might find evidence that Snape has been involved in some really bad things that go against the wizarding laws. Once they present this evidence to the proper authorities, like Dumbledore or the Ministry of Magic, Snape could be gotten rid of. Also, Harry might have some sort of prophetic dream that gives him the key to getting rid of Snape, just like he had dreams about Voldemort in the original series.
Naruto could use his Rasengan to create a big enough explosion to scatter the mob and then make his escape. He might also use his speed to quickly dash through the crowd and find a hiding place.
In some versions of fanfiction, Naruto might use a new and powerful sealing jutsu that he has either created or learned specifically for this purpose. It could be a jutsu that combines his Uzumaki heritage's sealing knowledge with his own unique chakra control.