The first Zoo in Portugal, formed in 1884. By the early 1890’s, facing financial difficulties the Zoo was reduced in size and sold many of its animals. In 1905 the zoo relocated to Quinta das Laranjeiras and gradually grew in size, taking numerous donations of new species, but this stopped during the Carnation Revolution in the 1970’s and the zoo was again in crisis. It was revived once more by investment from both public and private parties, and is hugely successful today.