Well, it depends on the specific fanfiction. There are countless fanfictions out there with all kinds of strange and wonderful ideas. Some might indeed depict Bellatrix as Harry's pet. It could be a part of a plot where magic or some other factor has changed their relationship completely. For example, a spell gone wrong or a new magic system introduced in the fanfic could lead to such an odd relationship.
A possible plotline could start with Bellatrix having a strange fascination with Harry from the start. She manages to get him in her clutches and treats him like a pet. Harry, on the other hand, uses his wits and the limited magic he can access in this state to outsmart Bellatrix. There could be a lot of psychological battles between them, with Harry trying to understand Bellatrix's twisted mind while she tries to break his spirit. And all this could be set against the backdrop of the ongoing war between the good and the evil in the wizarding world.
One possible plotline could be that Bellatrix captures Harry during one of his adventures and decides to keep him as a pet for her own amusement. She might use dark magic to bind him and make him obey her commands. Another could be that in an alternate reality, Harry is somehow magically enslaved to Bellatrix from the start, and the story follows his attempts to break free from her control while she uses him for various dark purposes, like spying on the Order of the Phoenix.
Well, for one, it goes against the spirit of the Harry Potter universe. The series is about magic, friendship, and the fight against evil. This kind of fanfiction concept takes it into a very dark and inappropriate realm. Also, it can be seen as objectifying Bellatrix in a very wrong way, reducing her to a mere 'pet' which is not only disrespectful to her character but also to the readers who have an understanding of the complex character she is in the original work.
One scenario could be that a powerful magic spell backfires and turns Bellatrix into a small animal that Harry then takes in as a pet. Another could be that in an alternate universe created in the fanfiction, the power dynamics are so different that Bellatrix is somehow subjugated to Harry and made into his pet.
Well, it would be very strange. Bellatrix is a Death Eater and Harry is her enemy in the original story. In this kind of fanfiction, perhaps Bellatrix would keep Harry captive in some way and treat him like a pet, which is quite a dark and twisted concept.
No. Such a concept is highly inappropriate as it involves non - consensual and inappropriate relationships. Fanfiction should generally be based on positive, respectful interpretations of the source material.
There are likely to be 'Harry is Bellatrix's pet' fanfictions out there. The Harry Potter fandom is very creative and has fanfictions covering all sorts of strange and unique ideas. To find them, you should start by using the exact phrase as your search query on different fanfiction platforms. But be aware that some of these might deviate a lot from the original canon in terms of character relationships and storylines.
I haven't come across a particular 'Harry is Bellatrix pet' fanfiction myself. It's possible that it exists in the darker or more niche corners of the fanfiction community. You could also try reaching out to other 'Harry Potter' fanfiction enthusiasts in forums or on social media to see if they know of any such works.
Yes, there might be such fanfiction out there. The Harry Potter fandom is vast and full of creative interpretations. Some fans like to explore unusual family relationships in their fan - created stories. This concept could lead to very interesting plotlines, like how it would change the dynamics between Harry and the Death Eaters if he was related to Bellatrix in this way.