They are in danger of going the way of the dodo.

Koala bears have been declared “functionally extinct,” the Australian Koala Foundation reports. The fluffy marsupial is down to just 80,000 wild species members, meaning there aren’t enough breeding adults left to support another generation of the pouched mammals.

The tree-dwelling species has been ravaged by the effects of rising temperatures and heatwaves, which have caused widespread deforestation and fatal dehydration in koalas, according to the AKF. Only 41 of the koala’s 128 known habitats in federal environments have any of the animals left.

If a new disease or genetic pathogen…