Blame the dogs.

Survivor pools are in shambles today as NFL favorites continue to take straight-up beatings. Three weeks into the season, there appear to be few sure things.

Green Bay gets rocked on opening night, at home no less.

The Patriots, 13.5-point favorites, lose a home opener at Gillette Stadium for the first time ever.

After beating the Packers and Lions, San Francisco somehow gets spanked at Minnesota.

Mike Perry, who runs the $20,000 Survivor Pool at Sportsbook.com, reports heavy damage similar to every other similar pool around North America, including the thousands of pools set up through Yahoo!.

“We had 13,540 entries,” says Perry, “and it looks like we’ll have about 1,800 or 1,900 players left after tonight’s Packers-Seahawks game.”

Perry said that seven percent of the pool headed for the door after the Saints were beat by Washington at home in Week 1 and 41 percent more exited after Arizona downed the Patriots. The Saints took down 34 percent more in losing to Kansas City at home, 16 percent were betrayed by San Francisco at Minnesota, and four percent had no luck when the Colts lost at home to Jacksonville.

For the savants who have been able to maneuver around the early-season train wrecks, the big home favorites this coming week are the Ravens (vs. Cleveland) and Houston (vs. Tennessee), both of which give 12.

Then again, the way things have been going, it might be wise to look for a decent dog.