Baird's tapir can weigh well over two hundred kilograms and eats an enormous volume of leaves, shoots and fallen fruit. Many of those fruits have seeds too large for monkeys or birds to swallow.
The tapir takes them whole. Its gut passage is long and much of the seed load emerges undamaged, deposited in dung along the trails and wallows the animal uses, often kilometres from where the fruit fell. Ecologists count it among the megafaunal dispersers left in the Neotropics after the Pleistocene extinctions, and the loss of such animals is associated with forests that regenerate with a narrower set of large-seeded trees.
The species is Endangered, thinly distributed and slow to breed, with single calves born after gestation of around thirteen months. Whether smaller frugivores and rodents can partly substitute for tapirs where they have vanished, and over what timescale, is a genuine research question rather than a settled one.