Cat Baseball Cards?

I just opened up a new bag of dry cat food to pour into the container to keep it fresh. I got about half way down and this card fell out. I felt like I was a kid again for a second with a surprise in the middle of the cereal box or getting that baseball card in the pack of gum. I just don’t get the point, it’s cat food. Not like the cat is going to enjoy the card. Am I supposed to keep this or something? Very confused right now.