Elizabeth: Pick up litter to protect our environment and keep animals safe
The UK's biggest litter charity has told Newsround that millions of animals are dying each year because of littering.
In a recent study, Keep Britain Tidy estimated that 2.9 million small mammals - like shrews, hedgehogs and voles - are dying each year after getting stuck in bottles and cans thrown onto grassland and parks.
One person trying to tackle the issue of litter is seven-year-old Elizabeth.
She's been organising monthly litter picks at her local park.