Canada's exploding population of 'super pigs' could spill over into the US, and experts fear the migration will cause 'an ecological train wreck.' The feral hogs are crossbreeds that combine the ...

Hong Kong’s butterfly population hit its highest level in at least 14 years in 2019, the warmest year on record in the city, causing a local green group to suggest the increase in numbers could have ...

Authorities have started offering bounties for people to hunt down iguanas in southern Taiwan. The island’s iguana population has exploded since the spiky backed giant lizards were introduced from ...