Only 4% of the global biomass of terrestrial mammals currently is wild. The remaining biomass is either human (36%) or domestic mammals ((60%). Given the large declines in wildlife numbers in the past fifty years, it is imperative that the world rethinks its approach to "sustainable" (?) use of wildlife.
Rowan, Andrew N.
"Wildlife Declines and Mammalian Biomass,"
WellBeing News: Vol. 1:
3, Article 1.
Available at: https://www.wellbeingintlstudiesrepository.org/wbn/vol1/iss3/1