Most of those are very nice, but a few of them are, IMO, just dumb. I mean, a pig??? Really? No animal strikes fear in the enemy more than a pig!
"I am a rear gunner for the flying swine!"
And that hippo looks like a nuclear experiment gone very wrong. I'm sure there is a story behind them but I'm surprised the guy that came up with those wasn't sent on an express train to the eastern front.