Just for info
A chap down the pub told me (literally)........ if you hit an animal head on at a reasonable speed with a Defender, as the steering rods are not well protected, it can bend them and steer you straight into the other lane if you're on the continent (or off the side of the road in the uk(?)).
A friend of his died this way in Luxembourg. He hit a wild boar while doing 55mph, the Defender dived into the other lane, flipped and hit a tree with the roof. The chap who told me the story has a steering guard installed for this reason....
A wild boar would seem to be the right height to do this, but I can't think of many other wild animals of the same height (no wild boars in the UK). A badger would get your diff, a deer your radiator and I think a fox would be too small. I guess the only real danger to the steering rods comes from dogs or wandering sheep.
Guy