Things to do for pet lovers, with and without their pets

8th Annual Pet Days: Learn about caring for pets; receive information on procedures like spaying, neutering and microchipping; and maybe find your next best friend. 9 a.m.-3 Sunday, Jan. 21. Orange County Marketplace at the Orange County Fair  & Expo Center, 88 Fair Drive, Costa Mesa. $2 admission will be waived with a donation of items to help animals and get free admission. Items include paper towels, bleach, cat litter, potty pads, gift cards, cash and fresh, new pet food (nothing op