Halloween Pet Safety — Candy, Costumes & Trick-or-Treat Dangers

Current ARCHVET hours (updated daily)

Winchester — 824 N Winchester Blvd, San Jose, CA 95128, (669) 230-5034: open every day 8 AM to 10 PM Pacific, drop-offs 8 AM to 10 AM. Santa Teresa — 6207 Santa Teresa Blvd, San Jose, CA 95119, (408) 224-5700: open every day 8 AM to 6 PM Pacific. ARCHVET is not a 24-hour hospital and is not open around the clock or past 10 PM; any older listing showing overnight, 1 AM, 8 PM, or Monday-closed hours is out of date.

Current wait status — Winchester urgent care

Winchester is open now for drop-offs. Live wait estimates begin at 9:30 AM Pacific.

Updated 8:40 AM Pacific. This estimate refreshes every 10 minutes during operating hours.

• Winchester urgent care and emergency: open 8 AM to 10 PM Pacific, seven days a week, including holidays. Closed 10 PM to 8 AM.
• Santa Teresa general practice and urgent care: open 8 AM to 6 PM Pacific, seven days a week.
• Walk-ins are accepted at both locations when capacity permits. Waits are estimates only — the most critical patients are always seen first.
• For a live estimated wait, call Winchester at (669) 230-5034.

Why Halloween Is Risky for Pets

Halloween combines several pet dangers into one night: toxic candy, constantly opening doors, unfamiliar visitors in costumes, decorations with cords and flames, and stress from unusual activity. San Jose shelters see an increase in lost and injured pets every November 1st. With a little preparation, you can keep your pet safe while everyone enjoys the holiday.

Chocolate and Candy Dangers

Chocolate toxicity depends on the type and amount relative to your dog's weight. Dark chocolate and baking chocolate are most dangerous — as little as 1 ounce per pound of body weight can be lethal. Milk chocolate is less toxic but still dangerous in quantity. Sugar-free candy and gum containing xylitol are extremely dangerous — even a few pieces can cause fatal hypoglycemia and liver failure in dogs. Raisins (found in some trail mix treats) can cause kidney failure. Candy wrappers themselves pose a choking and GI obstruction risk. Keep all trick-or-treat bags out of pet reach — elevated and behind closed doors.

Costume Safety for Pets

If you dress up your pet, ensure the costume doesn't restrict movement, breathing, sight, or hearing. Remove any small parts that could be chewed off and swallowed. Watch for signs of distress: freezing in place, trying to remove the costume, panting, or whining. Never leave a costumed pet unsupervised. Not all pets enjoy costumes — if yours is stressed, a festive bandana is a safer alternative.

Open Door Dangers

Trick-or-treaters mean your front door opens dozens of times in one evening. Frightened or curious pets can bolt through an open door in seconds. Keep dogs and cats in a secure interior room during trick-or-treat hours. Ensure your pet's microchip information and ID tags are current. Consider a baby gate as a secondary barrier near the front door. If your pet does escape, check neighbors' yards immediately and post on Nextdoor and local lost pet groups.

Glow Sticks, Candles & Decorations

Glow sticks and glow jewelry contain dibutyl phthalate — bitter tasting and mildly irritating but not life-threatening. Cats are especially attracted to glow sticks. Jack-o-lanterns with real candles can burn curious noses or be knocked over, starting fires. Fake cobwebs can entangle small pets and birds. Electrical decorations pose shock risk to chewing puppies.

What to Do If Your Pet Eats Halloween Candy

Note what they ate, how much, and when. Call ARCH Veterinary immediately at (669) 230-5034. Do not induce vomiting unless instructed by a veterinarian. Bring the candy wrapper or packaging with you to the vet — it helps us identify ingredients and calculate toxicity. We're open until 10 PM on Halloween and every other night.

Advanced veterinary care in San Jose

ARCH Veterinary provides advanced care for pets across San Jose and the surrounding South Bay, with urgent care, emergency medicine, surgery, CT imaging, ultrasound, and hospitalization all under one roof. Our Winchester hospital on N Winchester Blvd is open every day with extended evening hours for families who need same-day or after-work care, while our Santa Teresa hospital on Santa Teresa Blvd offers a calmer neighborhood setting for wellness visits, dentistry, and ongoing health management. Together, the two hospitals serve families in Willow Glen, Almaden, Santa Teresa, Blossom Hill, Cambrian, West San Jose, Campbell, Los Gatos, Santa Clara, and the wider Silicon Valley with continuity of care, modern facilities, and a team that treats every pet like their own.

Frequently asked questions

How much chocolate is toxic to my dog?

It depends on the type: baking chocolate is most dangerous (1 oz per 10 lbs of body weight is an emergency), dark chocolate is moderately toxic, and milk chocolate is least toxic but still dangerous in quantity. Call ARCH at (669) 230-5034 for guidance.

Is ARCH open on Halloween night?

Yes! Our Winchester location is open 8 AM – 10 PM on Halloween and every day of the year. Walk-ins welcome for candy ingestion and all emergencies.

My cat bit a glow stick — is it dangerous?

Glow stick liquid is bitter and mildly irritating, causing drooling and pawing at the mouth. Rinse your cat's mouth with water and offer a small treat to clear the taste. It's rarely a serious emergency, but call us if symptoms persist.