PETA is a pure Evil group. End of Story don't even try to make them out to be anything less.
I highly recommend watching the first episode of season two of Bullshit. Everything you need to know about PETA is in that.
The people who run PETA have a very warped sense of reality, They support killing people, and setting off bombs at research labs and people's homes, They are nothing less then a group of terrorist.
As its been said already once, they will kill poor animals just because they feel that animals are better off dead then in the care of people.
They see Chicken farms as being worst then the Holocaust. Seriously they had a set of ads that compared the two. What sicko sees chickens been in the same boat as the Jewish people?
I think its highly unlikely Nintendo has any connection with PETA, they are to dirty of a group to be even remotely connected with.