Currently, Mobble does not offer a direct print feature - but you can still print off your farm maps via a screen shot on the web app here.
Select what you want displayed on the map via the Map Options button in the top right (stack icon). You can toggle on/off mobs, paddock names, open gates and map assets.
Choose between Satellite or Terrain for the map background.
Zoom into the farm map as much possible, but still keep the farm boundary visible.
For Windows
Open the Snipping tool from the Windows start menu.
Select New and click and drag over map.
Select Print.
For Apple
Press and hold these three keys together: Shift, Command and 4.