The hook here is the number. This isn't a general 'come meet some cats' Saturday — there's a countdown, which means staff will be motivated and the selection will be curated toward animals ready to go home that day. Sunnyvale Petco runs a legit adoption center operation, not a pop-up, so the cats are socialized and the paperwork is streamlined.

Practical note: this is Sunnyvale, not SF. Drive or Caltrain to Sunnyvale station, then it's about a 10-minute rideshare to the Petco on El Camino Real. Parking in the strip mall lot is generally fine on a Saturday morning. Bring a carrier if you're serious — borrowing one at the event is possible but slower.

If you only have two hours: get there by 10 AM before the most adoptable kittens are spoken for. Meet a few animals, talk to the staff about temperament, and make a decision before noon.