This is worrying. From the BBC:

Populations of some of the world’s largest wild animals are dwindling, raising the threat of an “empty landscape”, say scientists.

About 60% of giant herbivores – plant-eaters – including rhinos, elephants and gorillas, are at risk of extinction, according to research.

Analysis of 74 herbivore species, published in Science Advances, blamed poaching and habitat loss.

A previous study of large carnivores showed similar declines.