The phrase "unclean animals" refers to animals that are considered impure or not suitable for certain purposes, often due to religious or cultural beliefs. Full definition
Dogs and pigs are considered to be unclean animals in Islamic countries, so your faux pas can be even bigger when you give a Muslim alcohol in a handmade pigskin bottle holder. (thetravelmagazine.net)
It came to Peter in the vision of common and unclean animals let down from heaven, and the voice which said to him, «What God has cleansed you must not call common» (Acts 11:9). (religion-online.org)
Foods that are prepared raw, unclean animal parts, or questionable cooking methods where there is severe risk of disease transmission should be avoided by pregnant moms. (babygaga.com)