Do’s
If your pets are normally let outside unsupervised, go outside with them or keep them indoors the day before, the day of Halloween and the day after.

Make sure your pet is licensed and is microchipped!
You can do your best to keep your pet indoors this Halloween, but your cat or dog may speed past a gaggle of candy-seeking kids into the night. Be sure you’ve registered your pet with the city and attached up-to-date identification tags to your pet’s collar.

It is also a great idea to have your pet microchipped in case your pet’s collar falls off. Microchips are a permanent form of identification and will always contain your information. All lost pets are scanned for a microchip at pet shelters and veterinary hospitals!

Keep your pets away from lit pumpkins!
Spooky colored candles and jack o’ lanterns can singe pets’ noses and light fur on fire! Keep animals and lit objects apart.

Don’ts
Don’t put a reluctant pet in a costume! Some cats and dogs don’t mind a few Halloween accessories, but don’t force an axious animal into a constricting outfit. Make sure any Halloween clothes let your pet breathe, hear, see and move freely.

Don’t feed candy to animals!
Treats that are delicous for children and adults can be harmful or fatal to pets. They can choke on the wrappers and chocolate is poisonous to dogs and cats. Put Halloween candy in scent-proof baggies and put a lid on your candy cauldron next to the door.

Don’t mix pets and trick-or-treaters at the front door!
Cats and dogs can frighten children, and vice versa. Put your pets behind a closed door when costumed kids come knocking. This will also prevent your pet from bolting outside during the many times the front door is opened and closed.

Last, if you won’t be home with the pets this Halloween, be sure they’re comfortable in the house. There may be a lot of doorbell ringing, screaming children, and noises that can spook pets. Consider keeping cats and dogs in rooms in the back of the house and turning on some background noise like a radio or TV.
Info courtesy of dvm360.com