Nah Suzanne I do agree with They on point # 1 - trapping and retaining being different.
Plants can trap but not retain. The one I am thinkiing of may be Amorphophallus but if not it's definitely one of the stinky flowers, attract beetles with a terrible stench. The bugs enter and remain trapped until part of the flower dies, and I'm sure it takes at least 24 hours. Once that has happened the part that has them trapped withers, and they are free to sod off and polinate another flower somewhere else.
In that case the insects are trapped but then released, which would disqualify the plant as carnivorous, in addition to the fact that the plant doesn't have most of the other features of a CP either.
That beaver stuff sounds rank.