Brazil: Wild animals take to the streets in Rio de Janeiro

Caimans and other wild animals appearing in city streets, and even inside houses, are becoming a frequent sight in Rio de Janeiro.

Conservationists say up to 5,000 caimans are living in rivers and lagoons across the densely-populated neighbourhoods in the west of Brazil's famous city.

Experts think urban expansion, polluted habitats and feeding by humans is encouraging their growing presence.