Petgear pet carrier - we used it for a cat.
Somewhat worn by years of use, but still useable. The main defect is that one of the plastic plugs that hold the door in place is missing. (This can be seen in the photo looking upwards at the door; compare the two round sockets and you will see the one on the left has a plug, while the one on the right doesn't.) This means that when the door is open, the door is apt to fall off, but when the door is closed and locked, it is secure.