New SCP, hopefully will be more successful than my last attempt.
To be honest, this feels like the start of a full story, but is not yet complete.
We have a number of other Safe animal/"pet" style SCPs, and one that suggests Quetzalcoatl isn't bad, so this is something that can continue to be worked on. However, the style of these has changed over the years, and it's worth looking at what's going on.
SCP-346 is an older one. Note that the story behind it is still mostly unknown, suggesting a living population of miniature pterodactyls somewhere in South America. I would not say that this is up to the standards of the site anymore. Although this article is still around (and I fully expect it to remain), if it were presented today, it likely wouldn't survive.
SCP-2991, on the other hand, definitely is up to the standards. You get more strongly the personality of Scarf, how the Foundation reacts to it, and the importance of its original owner's attachment to it. In terms of article length and complexity, not much has changed. However, the emotions evoked by the article and the narrative presented are stronger.
That's what you'll want to do with this one. You want to elicit an emotional response from the reader. The reader needs to connect to the snake, and in so doing the article will be greatly improved.
This isn't meant to be Quetzalcoatl, it's meant to be the snake from the tale of Gilgamesh.
A connection between reader and snake? Should I make it sapient and try communicating with the researchers?
Sapience could work. It's not so much the sapience and communication that will help, as much as the establishment of the snake's personality. By the end of the article, we should not only know what the snake is, but who the snake is. Sapience is definitely one way to achieve that.
I was passing by and decided to give a quick warning. Some people really dislike talking/ sapient animals, or think that they are too common on the site. Don't be discouraged, or give up on sapient snakes just because of what I say. But make sure that you take your time, and consider all your options and write carefully. Make sure it is unique, and that it's sapience is more than an add-on effect to explain story.
Added an interview log.
I don't feel the interview log is helping. What we see is similar to a legend or fairy tale, but without much in the way of rhyme or reason of anything happening. Furthermore, this is more telling and not showing; we're told that the snake revitalizes itself, and its skin can heal/provide youth, but anything related to how, why, or even any wonder stemming from the fact is missing. Finally, we have no sense of personality from anyone involved.
How to fix it? Well, what fascinates you about this snake? Why do you like it? That's going to be the feeling you want to impart to the article. We can discuss it some more, and see what can be done.