The hoofed animals in Australia,such as horses, donkeys and deer, that have been introduced are particularly destructive because their hooves destroy precious top soil.
What do you know about invasive spiders, scorpions and slugs? Introduced species cause big problems in the UK, so find out how the arrived and the effects they have on native species and ecosystems
There are now many invasive insect species in Britain, and they can have a big impact on the environment. So let's have a look at what damage they cause and how they are affecting native species
Barn owls are top predators across British farmland, but their numbers have declined in recent years. So why has this amazing owl become an endangered species
Muntjac deer are considered to be one of the most destructive invasive species in the UK. So what are muntjac deer, where did they come from and what problems are they causing for British native species and environment?