Just went back in case I had misunderstood Cain's post and I don't think I have, he said:
"The most surprising fact is that PeTA's a well-funded, nationally known organization but takes in only ~3,000 animals.... because that's not really their mission. "
The reason I asked about that is that it was as Cain says surprising that a national organisation with shelters across the nation only took in 3000 animals.
I think the point is "because that's not really their mission".