What is an appendix? That thing in our intestines designed to digest tree bark. We no longer eat trees, and as such, it can become violently active and cause immense discomfort and inconvenience for people involved costing a large sum of money. PETA is similar. PETA's purpose is noble don't get me wrong, and I do believe that animals should be treated humanely. But, joking or not, creating advertisements advocating for the boycott of Pokemon Black 2 and Pokemon White 2 on the grounds that it is inhumane to Pokemon is ridiculous. It is just as ridiculous as last year's boycott of Super Mario 3D Land because "it condoned the wearing of animal furs" however irrelevant the Japanese myth of the Tanooki is to them. Stunts like this serve to make their whole program illegitimate and it goes to show where your donations are going. Someone was paid to make the flash game and all the supplementing materials. Someone was paid to draw the pictures. This stuff isn't free.
And I'm in before IGN.com and Serebii.net
Here is a link to the game: http://features.peta.org/pokemon-black-and-white-parody/
EDIT: The full list of "animal friendly games" including Mario Kills Tanooki and Cooking Mama: Mama Kills Animals can be found here