> It is absolutely an abandoned pet.

That. Or the family fabricated the story for online fame.

Not saying that i have any evidence either way. Fundamentaly it is an unverifiable feel-good story with great online “viral” potential. It might be a very lucky axolotl who got abandoned, found and re-captured in the short window it could survive in the wild. It can also be a viral content strategy capturing eyeballs. In my, admitedly very jaded, guestimate I would give the two options about equal chances.