FWIW the subreddit for this game has posts of dogs humping. Development appears to be dead, unfortunately.

That's a very fine level of simulation.

Yup, abandoned 5 years ago judging by the Github page.

https://github.com/citybound/citybound/forks is always something I go poking around in when the original developer moved on. Sometimes one can find bugfixes, other times someone that has picked up the mantle quietly