William Pitt Sotheby’s International Realty in Ridgefield will host “Yappy Hour,” a pet-themed Cinco de Mayo party at its office at 470 Main Street on Friday, May 4, from 5 to 7 p.m.

Donations for the animal welfare organization Looking Glass Animal Rescue will be accepted. The event will feature refreshments for pets and their owners, and pet photos by Ground to Grow photography. There will also be a prize for the best four-legged costume.