What's Mallard raving about today?
The F.D.A., obese dogs, the Media, callous Conservatives.
Poor persecuted Mallard, always being misunderstood by the Media.
But given the fact that Mallard's wearing magenta polka-dot jammies when he utters the fateful words about fat dogs, the only conclusion we can draw is that it's the eavesdropping NSA which leaked word of his dog-hating to the big bad Media.
So, apparently, this panel is a criticism of the Bush Administration's illegal eavesdropping policies.