thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNK Conservation of the environment Conservation of the environment Ecology & Evolutionary Biology Environmental Science General Science Sociology Sustainability Zoology animal welfare bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNK Conservation of the environment birds cats coexistence conservation ecological environmental feline feral free-roaming outdoor predation thema EDItEUR::P Mathematics and Science::PD Science: general issues thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDA Philosophy of science thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNC Applied ecology thema EDItEUR::W Lifestyle, Hobbies and Leisure::WN Nature and the natural world: general interest::WNC Wildlife: general interest::WNCB Wildlife: birds and birdwatching: general interest thema EDItEUR::W Lifestyle, Hobbies and Leisure::WN Nature and the natural world: general interest::WNW The Earth: natural history: general interest trap-neuter-return