Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Adjustable Dog Diner Bowls Pets Stainless Steel Feeder Water Food Dishes Stand & EBOOK by Easy2Find
Product description: Dimensions:9.97 in. deep, (2.74 to 11.99) in. tall,19.99 in. wide Size:Medium Adjustable Base Feet for Pupies Elevated Height for a correct Feeding Position Materials:Plastic Stainless steel 2 Feeding bowls Color:Black
Product feature: Elevated Pet Feeder is a Durable Practical Feeder for your Medium Size dog that will Provide your Pets with Both Food and Water., The Durable Ergonomic Frame and Stainless Steel Bowls of the Elevated Pet Feeder will Make Sure that your Pet WIll Eat and Drink in an Anatomic Correct Position that Will Regulate Better their Toilet Needs., Help your Pet have a Healthy Diet and be Sure that it will Eat at the Correct Way with the Perfect tool for the Job. The Elevated Pet Feeder
Product price: $42.12
Product brand: VC
Target attributes: Pet
Answer: attribute: pet
value: dog
source: product title
attribute: pet
value: dog
source: product feature