I don't have the complete version of Harry Potter and the Snake Emperor, but you can search for the novel "Harry Potter and the Snake Emperor" on major online novel websites such as Qidian Chinese Network, Zongheng Chinese Network, etc. You may find something. However, it should be noted that some novels may have copyright issues, and not all chapters can be seen. It is recommended to understand the copyright before buying.
I can't provide the complete version of 'Silent Beasts'. It seemed that the book had not been officially published yet, and it might have been copyrighteously protected. If you need to read this book, I suggest you look for other sources such as online reading platforms or pirated book markets. However, please note that illegally obtaining copyright-protected works may violate legal rights and cause your account to be banned.
There probably are. Fanfic writers love to explore different ideas within the Harry Potter universe. A story where Harry has a pet snake animagus could be really interesting. It might involve new magical abilities or adventures related to the snake form. However, it could also be a bit of a challenge to fit into the existing lore, but that's the fun of fanfiction.
I can't provide you with the entire novel, I Can See the Success Rate. Because this novel had not been publicly published or published on an online novel platform, there was no complete novel resource.
It could also be a snake from the Forbidden Forest. There are many unknown and mysterious creatures in there. A snake from that forest might be more in tune with the natural magic of Hogwarts. Harry, being the curious and kind - hearted person he is, might come across it during one of his adventures in the forest and start a friendship with it.
It could be Nagini. Even though in the original series she was more of a servant to Voldemort, in the fanfiction, she could have a different personality and form a bond with Harry.
One possible plot could be that Harry is cursed by a dark wizard, and as a result, he grows snake hair. He then has to deal with the reactions of his friends and teachers at Hogwarts. Some might be afraid of him, while others try to find a way to break the curse.
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'.
One possible plot could be that the pet snake animagus is actually a reincarnation of an ancient wizard. Harry discovers this when the snake starts showing signs of intelligence and knowledge beyond what a normal snake should have. They form a unique bond and the snake helps Harry understand some of the more obscure parts of magic. The snake could also have enemies from its past life, which now target Harry, leading to a series of adventures where Harry has to protect both himself and the snake while also trying to uncover the snake's true past and how it can help in the fight against the dark forces.