As part of a campaign to raise awareness about the fate of the Indian tiger, the World Wildlife Fund created a campaign that played with the expectations of the avarage newspaper reader. On the comics page, they placed a play on the “spot the differences” strips that are generally offered on these pages, only this time the difference is the tiger that’s missing.
A nice, simple campaign with plenty of comics content to deserve mentioning here.
(Find a larger scan at Ads of the World)