system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do cats love lazer pointers so much?
gpt
Cats generally play-hunt laser pointer dots because they are relatively similar, to a cat's brain, as a small red insect crawling on the ground. 

Pretty much all play for cats is them mock-hunting in one way or another. Laser pointer dots are just similar enough to the things they actually hunt that it triggers the "oh, there's a bug, let's pounce on it" part of their brain and so they like playing with them.