Hi Foobar, Does their behavior depend on the breed perhaps? I know our Manx Loaghtans used to dig through the snow with their hooves to get to the grass, and also never seemed to drink water except when lactating.
However, although our Zwartbles prefer even poor grass to hay, they won't dig through to get at it, and as I said above, went mad for a bucket of water after they had been without for an afternoon.