Quellen

http://www.bauernhof.net/wp-content/uploads/2014/10/10726428_779842375387582_2026709160_n.jpg

https://image.jimcdn.com/app/cms/image/transf/dimension=394x1024:format=jpg/path/se70b24fa48d73e2c/image/ia9686001fb920120/version/1476729502/image.jpg

http://blog.berchtesgadener-land.com/wp-content/uploads/2011/10/Zigeuner2.jpg

http://www.rajasthan-indien-reise.de/images/cow-kuh.jpg

http://milch-umwelt.swissmilk.ch/issue/futter-verdauung/?gclid=EAIaIQobChMIzbiRsZPe1gIVo7ztCh3VHQPNEAAYASAAEgIHK_D_BwE&gclsrc=aw.ds#explore