My cat is obsessed with eating thin plastic. For example, the plastic from bulk food bags and thin grocery bags. I will actually find large holes in the bags, but he's yet to have bathroom issues or vomiting from this. I have not found plastic pieces in his excrement, but there are large holes in the bags, so I'm sure he's not just licking the bag.
I'm able to keep the bags in cupboards and hidden, so this is not a huge issue, but I'm curious as to why he does this.
What is it about specifically thin plastic that he likes? I don't think he has Pica as he only eats thin plastic, nothing else (not even chewing cardboard). He is very healthy and eats well.
I read the answers on this question but none of them address the 'why' element of my question.