Gorillas are sadly now considered one of the rare species still roaming on earth. These intelligent creatures are able to communicate with humans using sign language. Below is Koko, a female gorilla that was educated about climate change. She can speak to humans, and now she does so to send an important message.
See video at the end
This video was made after Koko was told about what is happening to planet Earth. She was told about the issue of climate change.