I just happened to stumble across this ad from an August 1939 edition of Popular Mechanics. It shows dogs riding in luxury on the French ocean liner Normandie. The dogs were provided with their own heated kennels, drinking fountain, life jackets, and gourmet menu. Something on the menu caught my eye.
Here is the menu, enlarged:
Interesting, no? From what I can tell, the meal involves fresh veggies and pasta. Or so my French-English dictionary tells me.