There was a survey that was done in the 1970s in a Panamanian tropical forest that found that sloths were the most numerically abundant large animal. They took up one quarter of the mammalian biomass.
Hubo una encuesta en los 70 en un bosque tropical panameño, que encontró que el perezoso era el animal grande más abundante, con hasta un cuarto de la biomasa de los mamíferos.