system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can perception of time vary so drastically? Like when you're on drugs, or e.g. slow motion car crashes.

Also, do animals have a similar perspective to humans for the rate at which time travels? And do different humans generally perceive time as moving at a similar rate?
gpt
Your brain needs to process everything you see, hear, feel, think, etc.

The faster it does this, the slower times goes for you. It's like an assembly line, and the fastest worker is pretty much waiting for the next piece to arrive. 

So by that logic, all humans and animals perceive time in a different speed depending on what's going on in their life and how their brain works.