I think of cats a obligate carnivores but not dogs. Most of dog food in store are plants with some meat mixed in.
I dunno.... for years i had cats and they always ate certain houseplants and different herbs outside in the garden as well. One of my cats was a real nuisance in the garden and would chew off the carrot greens. I thought it was rabbits or rodents at first until one time while daydreaming out the window over the back yard I could clearly see him munching down on carrot greens.. LOL