One possible adventure is that the snake takes Harry to an underground lair of some dark wizards. There, Harry has to use his magic skills and the snake's help to defeat the dark wizards and prevent them from doing evil deeds. The snake could be very useful in sneaking around and finding weak points of the enemy.
Well, they might go on adventures in the Forbidden Forest. The snake could use its unique abilities to sense danger and hidden paths. For example, it could lead Harry to discover some long - lost magic artifacts or secret chambers that are not known to most wizards. They could also encounter some magical creatures together and the snake could help Harry communicate with them in some special way.
Well, they might go on adventures like exploring the Forbidden Forest together. The hellhound could use its keen senses to find hidden paths or magical creatures. Harry could rely on the hellhound's strength and loyalty during dangerous situations, such as when facing dark wizards or magical beasts that lurk in the forest.
Perhaps they would go on adventures outside of Hogwarts during the holidays. The bat could fly ahead and scout for safe places for Harry to explore. They could end up at an old wizard's cottage where Harry discovers a new spell or an ancient magical artifact.
In this fanfiction, they may go on an adventure to rescue other magical creatures. The thunderbird's connection to nature could guide Harry to places where these creatures are in trouble. For example, if there are unicorns being hunted by dark forces, the thunderbird and Harry could work together. The thunderbird could fly above to scout the area while Harry uses his magic skills on the ground to fight off the hunters.
One adventure could be related to time - traveling. The phoenix, being a magical and mysterious creature, might have the ability to take Harry back in time. They could visit the founders of Hogwarts and learn about the true origins of magic at the school. This would not only be exciting but also give Harry more knowledge to use against his enemies.
The snake could help Harry find his way around Hogwarts. You know, Hogwarts is a huge and complex place. The snake might be able to sense the different magical auras of different areas and lead Harry to where he needs to go, like the library when he has to study for an important exam or the Room of Requirement when he's in a tight spot.
Maybe it's an anonymous gift from someone who has been observing Harry. This person could be a former student of Hogwarts who has a special connection to snakes and sees that Harry has a kind heart and would take good care of the snake. So they leave the snake for Harry to find with a simple note that just says 'For Harry Potter'.
They might go on adventures like exploring the Forbidden Forest. Since Harry is Doms' younger brother in this fanfiction, they could be sneaking around the forest looking for magical creatures that are rumored to live there.
Well, they could have all sorts of adventures. Maybe the baby cousin has some sort of special magic that Harry doesn't know about yet. For example, the baby cousin could be able to communicate with magical creatures in a unique way. And Harry, being the curious and brave wizard he is, would want to explore this new aspect of magic with his little cousin. They might go on a journey to find a rare magical creature that only the baby cousin can sense.
There could be. Fanfiction often takes the existing elements of a story and twists them in new ways. Given that Cerberus is a well - known mythological creature and the Harry Potter series already has a connection to it (like the three - headed dog Fluffy), it's not far - fetched to think that a fanfic writer would create a story where Harry has a pet Cerberus. However, it might be a bit of a wild concept considering how dangerous Cerberus is in the original mythology.
Perhaps he would name it 'Slyther', as a play on the Slytherin house name. Given that snakes are often associated with the Slytherin house in the Harry Potter universe, it would be a fitting name for his pet snake.