This is primarily a dog story - joys of owning one. sf content is peripheral. I found it very readable, even though I have never had a dog.
Narrator works at some astronomical observatory. He had found the little she-dog Laika abandoned, & cared for & kept her. They grow very close. Once she even saved his life during an earthquake.
When time came to take new job at an observatory on Luner Farside, option to take her simply did not exist. He left her with a colleague. And she died heartbroken within a month of his leaving.
Now, 5 years later, in the aftermath of a moonquake, he is remembering her & feeling sad.
"Dog Star", short story, review
First published: Galaxy, April 1962, as "Moondog"
- Robert Reed's "Roxie": Another primarily a dog story. But I find Clarke's version far more interesting.
- Eric Frank Russell's "Allamagoosa": A hilarious story where dog plays a crucial role.