Various species of birds and animals inhabit the area around the Torre de Belém. The marshy riverside location provides a habitat for herons, coots, ducks, seagulls and waders such as sandpipers. Invertebrates living in the mudflats include shrimp, crabs and molluscs. Mammals such as bats may be seen at night when they come out to feed on insects. Foxes are also known to inhabit areas near the tower while larger mammals like deer can sometimes be spotted in nearby forests.