Well, in some ways it can be. Some fanfiction might deviate a lot from the original values of the 'Harry Potter' series. For example, if it contains dark and disturbing themes that are not in line with the overall positive and moral tone of the books. Also, some fanfiction could potentially mislead new fans who are not familiar with the real essence of the story.
There might be a fanfiction where Harry teams up with some unexpected allies from other magical regions. This could lead to a whole new set of adventures as they combine different magical cultures and powers to face common threats.
Acromantulas are also potentially deadly pets in fanfiction. These giant spiders are intelligent and aggressive. They can overpower wizards and witches with their size and venomous fangs, and their colonies can be a great threat.
Some dangerous elements could be dark magic that is overly glorified. For example, in some poorly written fanfictions, the Unforgivable Curses might be used casually, which goes against the moral code in the original series. This can give the wrong impression to young readers who might not fully understand the implications of such magic.
Another way is to join fanfiction communities or forums dedicated to Harry Potter. There, you can ask other fans for recommendations. They might know some hidden gems that are not as easily found on the general search engines.
One of the dangerous pets in Harry Potter fanfiction could be a werewolf. In some stories, a character might try to keep a werewolf in a controlled environment, which is extremely dangerous as they lose control during full moons. Also, a manticore with its human - like face, scorpion - like tail and ability to shoot spikes is a very dangerous creature that could be a pet in fanfiction. And let's not forget the Grindylow, a water - dwelling creature with sharp teeth and a penchant for grabbing at people in the water.
Look for reviews and ratings. If a fanfiction has a lot of negative reviews mentioning inappropriate or dangerous content, it's best to avoid it. For example, on fanfiction websites, users often leave comments about whether a story contains elements that are not in line with the spirit of the Harry Potter series.
The potential for misinformation is a big factor. Fanfiction writers might take liberties with the story and create their own versions of events or character backgrounds. This can be confusing for new fans who might assume these made - up details are part of the official 'Harry Potter' lore. And some fanfictions may also have a negative influence on the way readers perceive the characters, like turning a heroic character into a villain in their own version without proper justification.
Dangerous pets can create a lot of chaos in the plot. For example, if a character has an uncontrollable dragon as a pet, it might escape and start causing destruction in Hogwarts or the surrounding areas. This would lead to a big crisis that the other characters have to deal with.
I'm not sure exactly what this particular fanfiction is about. But from the title, it seems it involves some sort of dangerous idea or situation within the Harry Potter universe.