I spotted David Normal's "Cathenge" installation in #HayesValley today too. It's a new #publicart installation featuring six 9-foot tall cats. Each cat has lights and a speaker in it. When you stand in the center, there is a disorienting clash of different low-sounds oscillating against each other. The art was commissioned by the #SFAC.

More info here https://cathenge.net/ #SanFrancisco