Qitzur Shulchan Arukh – 186
סִימָן קפו – הִלְכוֹת אֲבֵדָה וּמְצִיאָה
186: Laws of “You Shall Not Muzzle”
Whomever prevents an animal from eating at the time of its working, gets lashes [in beis din, assuming all the criteria for corporeal punishment were met; the point here is that it is a violation of a lo sa’asei, “you shall not”, in the Torah]. As it says, “Do not muzzle an ox while it threshes” [by treading upon the grain] (Bamidbar 25:4). Whether an ox, whether any other kind of farm or wild animal, whether non-kosher or kosher breeds, whether threashing or whether any other work of things that grow from the ground. It only said “ox while it is threshing” because it was what exists [is common]. Even if he “muzzles” it by voice, which is to yell at it and thereby it won’t eat, he is due lashes.
A Jew who threshes, even with a non-Jew’s cow and non-Jew’s grain [can] violate “do not muzzle”.
If the animal can’t eat because it is thirst, one is obligated to give it to drink. [Even though it is phrased as “thou shalt not”, it goes beyond prohibition and mandates action as well.]
An animal that does something which is bad for its internal organs, it is permissible to muzzle it. For the Torah is only being careful for its benefit, and this isn’t to its benefit.
Although this siman isn’t really on topic in terms of financial law, since it was both about middos and short, I didn’t leave a whole in the sequence of simanim.