system
Given the following post, respond as if you're commenting on Reddit:
human
What information does a dog glean about other dogs by sniffing their "markings"?

I am guessing that gender would be a given, possibly the age of the other dog and age of the marking. Anything else?
gpt
They can learn the gender of the other dog, as well a reproductive status. Dogs that are capable of reproduction are more likely to mark and male dogs are more likely to mark when in the presence of a female dog in heat or her urine.


 It's like OkCupid, but with piss for profiles.