Pretrained networks saved in train mode? 
OK, this was hard to guess. 
Sweet. Something works today, finally. Phew.
Thank you, @colesbury.
0.935 -> German shepherd
0.033 -> Leonberg
0.031 -> malinois
0.000 -> Norwegian elkhound
0.000 -> African hunting dog

What do you think, shall we embed the classes tuple, input image size, and the normalisation settings in the network object and make it in eval mode by default?
This code above should really be a oneliner, IMO.
At least I should send a PR with this example to be included in torchvision documentation, right?