Living Planet Report 2018 says wildlife populations are decreasing rapidly in some parts of the world.
From the latest global report, it says that wildlife needs international “life support” as they are dying fast.
WWF chief executive, Tanya Steele said: “We are the first generation to know we are destroying our planet and the last one that can do anything about it.”
The organisation’s Living Planet Report 2018 says nine out of 10 of the world’s seabirds are thought to have plastic in their stomachs, while by 2050 only one-tenth of the planet’s land will be free from human impact.
The Wildlife populations in Latin America and the Caribbean dropped 89% since 1970 and also climate-warming carbon dioxide levels are at their highest for 800,000 years.
At the Northumbrian Hedgehog Rescue Trust just outside Morpeth, where a team of volunteers cares for hundreds of sickly and underweight specimens every year, they fear the species is heading for extinction.
In the UK, populations of puffins are falling as rising sea temperatures reduce the numbers of the sand eels they feed on, while hedgehogs are predicted to almost vanish within the next few decades.
“It’s serious and I wish people would take that really seriously and try and do something to help,” Steele said.