I was refilled my med minder with spirulina and when I was done I forgot to wash my hands before petting Mario. He licked and licked my hands for a long time. I had spirulina powder on them.
So I did a little research, and apparently spirulina is also good for dogs. So I offered him a tablet and he took it like it was a special treat!
The Health Benefits Of Spirulina For Dogs - Dogs Naturally Magazine