Author Nick Abadzis got a lot of responses about the factual, sad fate of Laika in his graphic novel. So much that he wrote several alternate (entirely fictional) endings to the story to make readers feel better.

https://www.bigplanetcomics.com/category/comics/the-alternat...

I was hoping someone would mention. Here is another link: https://www.nickabadzis.com/laika-graphic-novel

Also in the category of fictional references to Laika, a wonderful episode of Space Dandy (“The Lonely Pooch Planet, Baby”)