Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Whimzees Natural Grain Free Dental Dog Treats, Stix
Product description: WHIMZEES Toothbrush Doggie Dental Chews are all natural, healthy, vegetable based and gluten free that helps remove plaque and tartar as your dog chews. With Whimzees Dental Chews your dog will always want to brush their teeth. These chews are mad with all-natural, vegetable-based ingredients, and feature textures that are not only fun, but functional. Chewing these fun treats helps to clean your dog's teeth by breaking down plaque and tartar.
Product feature: Dental Treats: Whimzees Medium Stix Help To Prevent Bad Breath And The Build Up Of Plaque And Tartar In Medium Sized Dogs, All Natural: These Highly Digestible Low Fat Treats Are Gmo Free, Gluten Free, Grain Free And Contain No Artificial Colors Or Flavors, Limited Ingredient: These Vegetarian Treats Clean Your Dogs' Teeth With Limited Ingredients Providing A Healthy Treat For Dogs With Allergies Or Sensitivities, Unique Shapes: Hollow Shapes And Spaces Allow Teeth To Grip And Chew More Easily While Providing A Long Lasting Chew, Artificial Flavors, Colors or Preservatives, Gluten, Wheat, GMOs, Grain, Meat, Unique shapes with grooves, knobs, and hollow spaces promote chewing action and help to clean hard to reach spots as the dog chews, Vegetarian, gluten-free, and suitable for dogs with ingredient sensitivities, No artificial ingredients, colors, flavors, or preservatives, No gluten, wheat, grain, GMOs, or meat
Product price: $9.24
Product brand: Whimzees
Target attributes: Chew Type
Answer: attribute: chew type
value: None
source: None