system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do humans smell if we skip a shower but animals can go with out taking any sort of bath?
gpt
It depends on the animal. Human body odor is primarily caused by bacteria that feed off of our sweat. Our bodies sweat because the evaporation of sweat helps our body keep cooler. Many animals don't cool themselves that way because they're covered in fur that would make sweating much less efficient. Dogs, for example, expel body heat by panting. Since dogs aren't sweating all day, there's not all that yummy skin juice for bacteria to feed off of, so they don't produce that human body odor smell.