Quellen

https://pixabay.com/en/puppy-baby-puppy-3122108/

https://pixnio.com/de/tiere/hunde/hunde-tier-tiere-holz-rasen-natur

http://www.fotocommunity.de/photo/ich-hasse-fussball-johann-swist/13321074

https://pxhere.com/de/photo/1169386

https://pxhere.com/de/photo/598354

https://pixabay.com/en/dog-pup-eurasier-bitch-nova-canine-3057460/

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSWoM_0C2TbhaZhDMfClOKwbDHlT_eKMdMZziMageGT8lz0C145zg