system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do cats follow their owners into the bathroom?

Every time I go to the bathroom, whether its to use the toilet or take a shower, my cat decides to join me. She won't leave until I'm done and often waits for me in the sink. Why do they do this? Bathroom camaraderie? worried about me?
gpt
Note: these answers are based on the information provided, and are speculative of other behavioral cues.

It could indicate that you are considered the alpha.  Public (to a pet, like leaving the bathroom door open) display of your defecatory and urinary odors is a signal of dominance among cats.  Also, in the wild, a cat defecating is at one of it's most vulnerable times, so having other cats around to observe is good for protection.