In Pictures: Zoo Poo Fuels New Tropical House

Visitors to Marwell Zoo’s new Tropical House can expect to see a sloth, pygmy marmosets, tortoises, and a giant aquarium with 2,500 fish.

Operators of the Hampshire attraction said 700 tonnes of animal waste – dung, soiled bedding and leftover hay – will help power the exhibit.

A wood chip boiler will be supplemented by one capable of burning straw-based animal manure later this year, helping the zoo achieve its goal of becoming carbon neutral by 2020.

Tiger barb fish swim in the 70,000 litre aquarium (Andrew Matthews/PA)

Rainwater from the roof will be harvested to provide water for the aquarium and plants (Andrew Matthews/PA)

Rica the two-toed sloth (Andrew Matthews/PA)

A pygmy marmoset clings to a tree (Andrew Matthews/PA)