Adding to what the other comments have already said: Don’t bring an unleashed dog on a cow pasture. You’d think that’s common sense, but apparently it’s a bit of a meme in Austria and Switzerland that every few months some German get’s trampled by cows because their totally friendly dog ran towards the cows and they felt threatened.
To be fair though, there are way more cows than crocodiles, snakes, sharks or deadly spiders in the UK.