Wayne,

I went to a cat show yesterday. A cat being shown was waiting in a cage and all of the sudden the cat went nuts. Everyone was afraid it was going to hurt itself. It was awful to witness. The owner put a blanket over the container to quiet it down and within a few minutes it was quiet. I know when I captured the local feral cats, that's what they told me to do too - to cover the container. You might want to try a new container (hopefully with strong doors) and then completely cover the container until you get in to the Vet's consult room. Good luck!

SAS