Knock out your grocery list and knock down pet overpopulation in one trip Tuesday at Whole Foods Market during its Community 5% Days.

Whole Foods, 3540 Wade Ave., will donate five percent of the day's net sales to AnimalKind, a local nonprofit organization that administers The $20 Fix, a financial assistance program that enables low-income families to spay or neuter their pets.

AnimalKind operates North Raleigh's ReTails Thrift Shop, which gives 100 percent of its net profits to the program. More than 4,000 pets have been spayed or neutered through the program since it began in 2004.

Also on Tuesday, ReTails is having an orientation tour for volunteers from 6:30 to 7:30 p.m. at the store at 1608 North Market Drive. Volunteers sort donations, restock merchandise and provide customer service.

Go to www.animalkind.org or call 872-0019 for details.

TEST YOUR FORTITUDE -- AND SANITY

Is it an eating contest or a race? Test your intestinal fortitude and your athleticism during the Krispy Kreme Challenge, a race in which participants run two miles from N.C. State's Belltower to the Krispy Kreme store on Person Street, eat a dozen doughnuts, then run back to the Belltower -- in less than an hour. Without throwing up.

The race began four years ago as a bet between several N.C. State students and evolved into a fundraiser supporting the North Carolina Children's Hospital. Last year's race, which raised more than $10,000 for the hospital, featured nearly 1,400 questionably sane runners, many looking like they'd lost their way to a costume party. More than 3,500 are expected to register for this year's event.

The record for the fastest finish is held by Auburn Staples at a mind-blowing 24 minutes and 32 seconds.

Public relations coordinator Theresa Crowgey, an N.C. State sophomore, said this year's route will have more water stations. But she doesn't promise any healthy snacks.

Organizers tout the race as N.C. State's newest university tradition. The race's largest sponsor, Raleigh Running Outfitters, is located in the Celebration at Six Forks.