There's a growing memorial on 16th Street for "KitKat," a fixture at Randa's Market.
KitKat died late Monday night.
MORE: Waymo driverless car hit bicyclist in SF intersection, company says
For days, ABC7 News has tried to get details from Waymo about what happened.
On Thursday, a company spokesperson said a robotaxi was stopped to pick up passengers, and KitKat darted under the car as it was pulling away.
Waymo will make a donation to an animal rights group in KitKat's honor.