In 2016, I created a Train in Tinkercad. One of the train cars was a Livestock Car. My thoughts were: I now had a Railroad Station to drop off the passengers, therefore I needed a place to drop of the cows. The cow was created when as part of the livestock car. Here is the Cattle Depot I created. Link to 3d view: https://www.tinkercad.com/things/6m2hyWDzL7z.
The cow is one of my most popular designs. If you are wondering how I came up with the name for the Town, well the train is called “Midnight Express”.