Yes, they were inserted as singles in a cellophane wrapper inside the dog food. I believe (if my memory is correct) the card/wrapper was attached with some glue on the inside of the bag towards the bottom on the side.
I think I still own a few of these, and I can VIVIDLY remember begging my parents to buy that specific type of dog food just for the card.
I can also remember getting bitched at for opening/dumping the entire bag as soon as we got home
