The phrase "most pasturing" suggests the act of grazing or feeding animals on grass for extended periods of time. Some synonyms for this phrase could be "grazing heavily," "feeding extensively on grass," or "having access to plentiful pastures." Other options might include "enjoying abundant grazing opportunities," "sustaining themselves through grazing," or simply "grazing at length." These synonyms highlight the idea of animals spending significant time consuming grass and other vegetation, which is essential for maintaining their health and well-being. In general, using descriptive language that emphasizes an animal's access to pastures and natural food sources is important when discussing their care and maintenance.