Thank you for writing to us. The list on our website is a list of products that DO NOT contain pork. The enzyme used to make the cheese used in Cheetos Crunchy is from an animal source, but not pork.
Most cheese is made using animal enzymes animal. The source of the enzyme lends to the flavor of the cheese.
We consider you a valued consumer and hope you will continue to enjoy snacks from Frito-Lay.