The first clinic I used also had that problem. The one I use now, they just pick the carrier apart. It's very convenient to be able to decompose the carrier, but carriers are different in that respect. Mine is an Atlas 30 - it is likely not available everywhere.Really Sleepy, I did that with my first two cats, but then getting them out on the exam table was nearly impossible. So now I swear by cat carriers that also have top doors.