In doing research for this post, I have come to the important conclusion that dogs reached the height of their cuteness in the 1930s. Really, like a fourth of these dogs are wearing little hats.
This dog wearing a hat, '30s
Source: boston_public_library
This dog named Jerry sharing water with this duck named Rex, 1931
Source: boston_public_library
This ridiculous sheepdog, 1932
Source: fawbs
This dog and the little girl he takes care of, 1931
Source: srharris