"That animals are to be treated with kindness is indicated in the law of Moses. The Lord enjoined the Israelites to show kindness to the ox by not muzzling it when it was treading the corn during the harvest threshing. (Deut. 25:4.) Undue strain on unequally yoked animals was forbidden as well. (Deut. 22:10.) The ancient Israelites were also to avoid destroying birds’ nests while working in their fields. (Deut. 22:6–7.)"