You can check out Audible. It has a large collection of audiobooks, including many dragon shifter romance novels. They have a good search function so you can easily find what you're looking for.
There's also the 'Fire - Breathing Heart' audiobook. It tells the story of a dragon shifter who has to overcome many obstacles to be with his true love. The audiobook has a great sound quality and the voices of the characters are distinct, which makes it easy to follow along and enjoy the romantic journey.
One popular dragon shifter novel is 'Dragon Bound' by Thea Harrison. It has an interesting world - building with dragon shifters having their own unique society and powers. Another is 'A Shifter's Sacrifice' which focuses on the challenges faced by the dragon shifter protagonist in a world full of magic and danger. And 'Feverborn' also features dragon shifters in an epic fantasy setting with complex characters and a thrilling plot.
Definitely check out 'Dragon Fire'. It has a very relatable main character who is a dragon shifter. The story is full of action and adventure, which is what most people like in these kinds of novels. And 'Heart of the Dragon' is also a good start. It has a clear narrative arc and gives a good introduction to the world of dragon shifters.
They can be very popular. The popularity stems from the fact that dragon shifters offer a different kind of supernatural being compared to more common ones like vampires or werewolves. In audio book form, the narrators can really bring the characters to life, especially when it comes to the dragon characters with their powerful and often mysterious personalities. Fans of both romance and fantasy are likely to be interested in this genre in audio format.
One common theme is the power struggle. Since dragon shifters are often depicted as powerful beings, there is often a struggle for power within the shifter community or against external forces. And this power dynamic can also affect the romantic relationships in the story.
There could be a human character who befriends a dragon shifter. This human might play an important role in helping the dragon shifter navigate the human world or vice versa. Another main character could be an antagonist, perhaps a powerful wizard or another dragon shifter with evil intentions, who tries to disrupt the peace or gain power at the expense of others.
Well, the art style could be really interesting. Maybe it has detailed and vivid illustrations of the dragon shifters, showing their transformation in a cool way. Also, the story might be exciting, perhaps filled with battles between the dragon shifters and their enemies, or it could explore the complex relationships among them.
One popular 'HTTYD Hiccup is a Dragon Shifter' fanfic could be 'The Dragon Within Hiccup'. It explores how Hiccup's new ability as a dragon shifter changes his relationship with Toothless and the other dragons. Another might be 'Hiccup's Shifting Destiny' which delves into the challenges he faces while hiding his new form from the village at first.
I really like 'Sapphire Dragon' by Miranda Martin. The setting of the story is fascinating, and the dragon shifter is both mysterious and alluring. The relationship that develops between him and the female lead is full of passion and the story has a great balance of action and romance.