I saw this a few months back and wondered if anyone knew who that handsome man (?) was. Dogville Shorts were made between 1929 and 1931. Reminds me of the old "Dogs Playing Poker" pictures. Classic art, almost brings a tear to my eye:D.
If it's commercially made chocolate, they'd have to eat a lot to get sick. If it's 'real' chocolate, a little amount can be sufficient to really make them sick. Commercial chocolate is a lot of fake stuff.