Hopkinton-based Greyhound Friends is celebrating 40 years in dog adoption and advocacy with an anniversary gala on Saturday, June 24, from 4-7 p.m. in tents outside the facility at 167 Saddle Hill Road. The event will include dinner, music, special guests and a silent auction. Dogs should be left at home. For more information, email greyhoundfriends.office@gmail.com or visit greyhound.org.