Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Royal Canin Veterinary Diet Canine Gastro Intestinal HE (High Energy) Canned Dog Food 24/13.6 oz Cans
Product description: This listing is for 24 ~ 13.6 oz (385 g) cans. ROYAL CANIN Veterinary Diet canine GASTROINTESTINAL HIGH ENERGY HE dry and GASTROINTESTINAL HIGH ENERGY HE can are high energy, highly digestible, palatable, complete and balanced dog foods. These formulas are high in energy, and contain ingredients to help maintain the balance of GI microflora and intestinal mucosa integrity. Additionally, the canned formula is approved for growth.
Product feature: Royal Canin is an industry leader, Formulated to meet your dog's specific dietary needs, Digestive Support, High Energy, Antioxidant Complex
Product price: $143.00
Product brand: Royal Canin
Target attributes: Life Stage
Answer: attribute: life stage
value: None
source: None