Our Zsa Zsa, got her body caught in one...thank goodness i was home, i
had to stomp on it to get it to loosen it's grip on her.  She has a
small head, but a rather wide load follows, and that is how she got stuck.
Milk crates are dangerous.  LIfe with ferrets is often quite a learning
experience.
[Posted in FML issue 3818]