On Earth the weight of the livestock far exceeds the weight of all humans and all other mammals. This is another reason why we must reduce our consumption of meat.
Quote from https://www.rte.ie/news/2018/1030/1007451-wwf_living_planet/
<< Measured by weight, or biomass, wild animals today only account for 4% of mammals on Earth, with humans (36%) and livestock (60%) making up the rest. >>