- Product Name: Wakankan Mirai no Dog Food - Contents: 1kg - Expiration Date: February 28, 2027 Thank you for viewing. My beloved dog passed away recently at the age of 17. I have some unopened dog food remaining, so I am offering it for sale. Also, there is some that has been opened but hardly eaten, so if anyone would like it, I will ship it together. (Photos 4 and 5) The expiration date for the opened food is April 30, 2027.