The First Wednesday Street Party tonight, with the theme "Dog Days of Summer," will feature the always popular Pooch Parade up and down Main Street with dog tricks performed at Lions Wayside Park.

While the Pleasanton Downtown Association street party gets under way on Main Street, the pooches and their people, many in imaginative costumes, will gather at the First Street park for registration and to play on doggie ramps and slides erected for their enjoyment.

Pooches 4 months or older can be entered in any or all of the seven categories for prizes, with an entry fee of $10 per category. All proceeds benefit the Tri-Valley Guide Dog Puppy Raisers.

The seven categories are Senior Pooch (8 and older); Cute Enough As Is (no costume), under 30 pounds; Best Team Outfit (human and pooch); Cute Enough As Is, over 30 pounds; Puppy Fun (pooches 4 months to 2 years); Most Creative Costume (pooches only); and Best Trick (pooches of all ages).

Registration and judging begins at 5:30 p.m. with dog tricks performing at 6:30 p.m. The parade begins at 7 p.m. Winners in each category as well as the drawing will be announced at 7:45 p.m.