Is the mass of herbivorous animals less than the mass of predators that feed on them?

The mass, or in other words the live weight, of different herbivorous animals varies by hundreds of kilograms. Compare, for example, the weight of a hare and an elk, or a bull. On average, the weight of a hare does not exceed 8 kg, while a one-year-old bull weighs at least 600 kg, and if a bull is two years old, then its weight already reaches almost 800 kg. Nevertheless, a wolf, whose weight is less than the weight of a bull, elk and the like by several hundred kg, attacks these animals. This is true for tigers and lions, cheetahs, leopards and other predators.