Would it be possible to remove a single glass panel from the bottom of these French doors, or is it likely one solid piece of glass?

I've always thought it would be cool to have one of these squares of glass on these doors missing as a cat door so I could keep them closed. Swear I felt one shift when cleaning, but logically it makes sense that it would just be one solid piece with trim over it, right? If not, would it be possible to safely pop one out on the bottom without completely ruining the door? I have the average amount of tools for a homeowner and stuff to refinish it. Thank you in advance!