Most of the expos are pet friendly...I recommend bringing them because you are able to let your dog sample what treats/food/toys they would like. Plus there are vendors selling different types of handmade carriers that are not offered in retail that you can try on with your yorkie. So bringing your dog is definitely recommended! Most of the vendor participators had their dogs in one of those baby play pen with them. So go ahead and bring your dogs...it's a PET EXPO...for them