The Conversation looks at (rare) instances of people attacked by cattle:

Does having a dog make a difference? Yes: dogs look like predators, and they are even more threatening to dairy cattle than unfamiliar people. This is reflected in the data: 94% of walkers killed had dogs, and two thirds of all attacks involved dogs. Though our sample numbers were small, we also found evidence suggesting that women were more likely to protect their dogs, while men let them go – the recommended advice, which my dad did not follow.