I have no problem with people who are appointed or elected to animal control positions carrying guns in the same manner of private citizens, but I am categorically opposed to giving law enforcment powers, particularly immunity, to people who are not sworn law enforcement officers. This is a recipe for trouble, and no good will come of it.
If Pennsylvania is going to have animal enforcement officers, they ought to be sworn police, employed by, and accountable to the public. I am very uncomfortable with giving private organizations, like the SPCA, quasi law enforcement powers.
Hat Tip to Another Gun Blog