1. Department of Comparative Biomedicine and Food Science, University of Padua, 35020 Padua, Italy
2. Ethics Laboratory for Veterinary Medicine, Conservation and Animal Welfare, University of Padua, 35020 Padua, Italy
3. Department of Environmental Sciences and Policy, University of Milan, 20133 Milan, Italy
4. Associazione WWF Lecco, 23851 Galbiate, Italy
5. Department of Biosciences, University of Milan, 20133 Milan, Italy
6. Department of Reproduction Management, Leibniz Institute for Zoo and Wildlife Research, D-10315 Berlin, Germany