A banner displays a lively dog with its mouth open, ears perked forward. Bold text reads “Pet-Friendly Hiking Trails” alongside “Did you say WALK TIME?” A bone-shaped button features the word “STAY!” in clear lettering. The Greater Ontario, California logo appears in one corner. The background is bright orange covered with scattered paw print graphics. Sized for a 728-pixel-wide desktop format.

Peninsula Humane Society – Lost Dogs

Peninsula Humane Society – Lost Dogs

If you have lost your pet or found a stray, please visit the Peninsula Humane Society's San Mateo shelter (12 Airport Blvd.), their intake facility for all incoming animals. If you've lost an animal, please visit immediately!

Each year, the Peninsula Humane Society reunites thousands of stray pets with their human companions. During your visit, pick up their helpful brochure titled "When You've Lost Your Companion Animal" and their free Lost Animal flyer templates.

To increase the chances that your animal will be returned, post this flyer (with your pet’s photo) in areas of your neighborhood where posting is allowed.

If you cannot visit right away, please call (650) 340-7022 for help.

Keep in mind that the Peninsula Humane Society can't make positive identifications over the phone. Stray animals are held for the state mandated four-day period (excluding the day they arrive) before being evaluated for adoption.

© 2025 DogTrekker.com