Sugar-free sweets are no treat for your dog.

Xylitol, a sugar-free sweetener commonly found in candy and gum, could quickly cause low blood sugar, impaired muscle coordination, and seizures in dogs. Seek immediate medical attention if you suspect your dog has ingested this substance. To avoid a trip to the vet, keep bags, backpacks, and the other places you stash xylitol-sweetened treats out of reach.