A summer celebration to benefit Hopkinton-based Greyhound Friends will be held from 4-6 p.m. on Saturday, July 23, at the Charles River Country Club Pavilion in Newton. The fundraising event will include hors d’oeuvres, beverages and musical entertainment by Jesse Racicot. Tickets are $50 per person or $75 per couple. For more information, visit greyhound.org.