While not watching the Ducks smack down the dawgs on Saturday, or putting the finishing touches on those costumes, you should head out to PetCo for some hilarity.
The pet costume contests are at 2 PM at all store locations - so get em some treats and put on the bat wings, bee stripes or antlers - Check it out here
"Registration begins at 1 p.m., as does the Photo Spook-tacular where pet parents can get a framed picture of themselves with their costumed companion for $3.95"
On Hawthorne - you can help out domestic violence victims while getting cool comic stuff at Wonder Woman Day!
Excalibur comics is having an auction of heroine-themed items to benefit three local charities - it's from noon-6 PM. There's also free prints, door prizes and caricatures!