This morning I saw an article on the BBC site on the megalodon - a giant prehistoric shark - and the strength of its bite. It seems its jaws exerted something between 10.8 and 18.2 tonnes of pressure as it bit down which is pretty impressive for an animal that had a cartilege jaw.
It reminded me of a quiz we did a good few years ago now where a fossilised megalodon tooth was one of our exhibits (the quiz is here if you want a go, or just skip to the megalodon bit and see the tooth). It was pretty awesome handling that tooth.
Something that did strike a chord in the article was the bit about your average house cat. Apparently pound for pound the cat has the stronger bite, which if you've ever tried to push a pill down your cat's throat you'll know full well.