That's okay. This seems to be an official act too, I got the link from the RSPCA website and they have joined with The Humane Society in the US and also the WSPA amongst others, so it really may have a genuine chance if enough people support it. I really hope it does.
They want a similar declaration in the UN as the environment one and also the human rights declaration.
I see no reason why animals should not have one too.