Sentence:  Like many vegans, Moore said she chose her diet because she cares deeply about animals and wanted to "live [her] ethics." For her, extending <WSD>veganism</WSD> to her cats supports that choice and also helps reduce her environmental footprint. 
Meaning of the word marked with <WSD> tags:  A way of life which strictly avoids use of any kind of animal products and services that are based on exploitation of living animals.