Here's an odd story. In the UK, the plastic container that McDonalds uses for their McFlurry ice cream thing had to be redesigned because hedgehogs were getting their heads stuck in it and they'd then starve to death. Wow! Who would have ever anticipated that when they originally designed a cup? Talk about a weird cause and effect.
You can read about the full story here.
It reminds me of how a friend recently chided me for throwing out the plastic rings that are used to hold a six-pack of soda together without first cutting all the rings. It turns out animals can get the rings stuck around their necks and as the animal then grows bigger, it can strangle them. Yikes!