"The Sandkings" Creepy But Good

"The Sandkings" was a short story about a very malicous man named Simon Kress with an intrest in dangerous alien pets. He grows bored with his current ones and lets them eat eachother. He then goes into town to find a new interest. He finds a shady looking store in the  bad part of town and inside he finds the co-owner and she sells him the Sandkings, which will part take in wars with eachother and worship the owner as a god. The rest of the story is about Kress mistreating the Sandkings and getting his just deserts, no pun intended (find out how this is a pun when you read the story). The story was good overall but the ending gave me the creeps. It was very ominous and you don't quite know what happens, but that's what happens with most science fiction short stories, so it was expected. I liked how it showed Kress' descent into madness and paranoia near the end of the story. It was very descriptive which was great and held my attention throughout the tale.