Oh wow just saw this thread, that is really scary! My KSB got out once and since then definitely changed the way I obsess over making sure things are secure. I'm glad it ended ok, I had a little laugh picturing Cosmo all puffed up and hissy (I'm sure it wasn't funny at all in the moment, just hognoses are so freakin cute and funny). Glad it ended ok. And your ferrets are adorable!!!