The challenge is on, especially if your dog is going to be topical, witty but still adorable for the best-dressed pet contest at the annual SPCA Pet Walk. Sure, you're tempted to strap a little ice bucket to the top of Spike's head (good for a drink later!) but that is so five minutes ago. The event from 8 a.m. to 1:30 p.m. Saturday includes a 3K walk along the waterfront, an adoptable pet parade, a doggie day spa, an agility course, a pancake breakfast, a pet-wellness clinic, food trucks, a food court, dog caricatures, a dog water park and vendors. It's $25 at Vinoy Park, 501 Fifth Ave. NE, St. Petersburg. Benefits the SPCA Tampa Bay. (727) 499-0364.
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Brews by the Bay
It's the sixth year for this craft beer and food festival for the Florida Aquarium and there will be more than 100 beers, food, aquarium exhibits and live entertainment. Benefits the aquarium's education and rehabilitation programs. $50 advance, $60 day of, $75 VIP. Florida Aquarium, 701 Channelside Drive, Tampa. (813) 273-4000. 8-11 p.m. Friday.
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Chicken Drop Bingo
Pick a square. If the live chicken roaming around the giant bingo board drops an unsavory load on your square, you win. This fundraiser for the Huntington's Disease Society of America costs $15 for entry and includes one free beer or glass of wine, one game entry, drink specials and a silent auction. Children free. Ferg's Sports Bar and Grill, 1320 Central Ave., St. Petersburg. (727) 433-8885. 5 to 8 p.m. Saturday.
Suenos de Dali: "From Barcelona to Paris: A 1920s Bohemian Soiree. A Parisian nightlife-themed costume party. $125 advance, $150 day of. Dali Museum, 1 Dali Blvd. (Bayshore Drive SE and Fifth Avenue SE), St. Petersburg. (727) 823-3767. 8 to 11 p.m. Saturday.
Jobsite Theater Gala
Summer cocktail attire is recommended for this '60s-themed party. $75, $125 for two. Jaeb Theater at David A. Straz Jr. Center for the Performing Arts, 1010 N MacInnes Place, Tampa. (813) 229-7827. 7 to 11 p.m. Saturday.
Wheel on Up
An extreme-style interactive fundraiser with skateboarding, roller-derby demos, wheelchair Motto X, food and music. Benefits the Spina Bifida Association of Central Florida. Free, but donations are appreciated. Schoolyard Skatepark, 4033 35th St. N, St. Petersburg. (407) 248-9210. 2 to 7 p.m. Saturday.
Screen on the Green
This week features Despicable Me 2 with food trucks on-site. Free (food additional). Water Works Park, 1710 N Highland Ave., Tampa. (813) 274-8750. 7:30 p.m. Saturday.
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Seddon Channel fills with paddle boards, dragon boats and kayaks for two days of rowing races. And there are two parties surrounding it. On Friday, BLU: Hillsborough Regatta Kickoff Party, features a laser show, cash bar, DJ and food trucks. $15, 11 and younger free at Marjorie Park on Davis Islands, 6 to 10 p.m. Friday. On Saturday, the Steward's Club will have a party where you can wear a fashionable hat for a posh party for the Head of the Hillsborough Regatta with reserved seating, brunch, open bar. Benefits the Stewards Foundation. $85, 11 and younger free. The regatta itself is free for spectators and runs 8 a.m. to 4 p.m. Saturday, 9 a.m. to 3 p.m. Sunday. Cash bar and food trucks at Marjorie Park on Davis Islands, 81 Columbia Drive, Tampa.
Cotee River Bike Fest
It's hog heaven at the annual three-day motorcycle extravaganza in the park. Free. Sims Park, 6341 Bank St., New Port Richey. (727) 842-7651. 5-11 p.m. Friday, 11 a.m. to 11 p.m. Saturday, 11 a.m. to 5 p.m. Sunday.
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Farm Fall Festival
Primarily for children including hayrides, pony rides, face-painting, farm-animal interaction, pumpkin patch, train rides, bonfire and live music. $10. Horse Power for Kids, 8005 Race Track Road, Tampa. (813) 855-8992. 11 a.m. to 5 p.m. Saturday, 11 a.m. to 5 p.m. Sunday.
Meet at the Osborne Street side of the school for a 13-mile ride through Seminole Heights. Helmets are required and riders must maintain a speed of 10 to 12 mph. Free. Memorial Middle School, 4702 N Central Ave., Tampa. Also at 8 a.m. Sunday meet in the parking lot behind the Dunedin Historical Museum for a 29-mile ride on the Pinellas Trail north to Tarpon Springs. Dunedin Historical Museum, 349 Main St, Dunedin. (801) 520-0350.
Fall Plant Festival
The area's large fall plant sale with more than 50 vendors, a scarecrow display, kids' activity area and advice from experts. $5, free members/ages 11 and younger. USF Botanical Gardens, 12210 USF Pine Drive, Tampa. (813) 974-2329. 10 a.m. to 4 p.m. Saturday, 10 a.m. to 3 p.m. Sunday.
Kids ages 7 to 12 can see if street hockey might be a sport for them. No experience or equipment required. Meet former Tampa Bay Lightning player Jassen Cullimore. Ages 7-9 meet at 1 p.m. and ages 10-12 meet at 2:15 p.m. Free. All Sports Arena, 7716 Rutillio Court, New Port Richey. (727) 845-7808. 1-3:15 p.m. Sunday.
Get tips, trade secrets and advice from more than 100 of the area's top bridal specialists. $5. Coliseum, 535 Fourth Ave. N, St. Petersburg. (727) 893-8134. Noon to 4 p.m. Sunday.