April 27-29: The Pet Expo is a celebration of pets! Featuring pet accessories and gadgets; animal welfare organizations; pet clubs and associations; petting zoos; pony rides; and animal-centered performances. Friday, 10 a.m. – 6 p.m.; Saturday, 10 a.m. – 7 p.m.; and Sunday, 10 a.m. – 6 p.m. $10-15; tickets available at gate and online; check their website for discounts. O.C. Fair and Exposition Center, 88 Fair Drive, Costa Mesa. www.petexpooc.com. Personal pets are not permitted.