DEWORMING – it is the giving of an anthelmintic drug (a wormer, dewormer, or drench) to an animal to rid it of intestinal parasites, such as roundworm and tapeworm. Purge dewormers for use in livestock are often formulated as a liquid that is squirted into the back of the animal’s mouth, as an injectable, or as a pour-on which can be applied to the animal’s topline.
Neutering, from the Latin neuter (of neither sex), is the removal of an animal’s reproductive organ, either all of it or a considerably large part. The term is often used in reference to males whereas spaying is often reserved for females. Colloquially, both terms are often referred to as fixing. While technically called castration for males, in male horses, the process is referred to as gelding.
It is any medical or public health procedure whose purpose is to prevent, rather than treat or cure, a disease or other medical issue. In general terms, prophylactic measures are divided between primary prophylaxis (to prevent the development of a disease) and secondary prophylaxis (whereby the disease has already developed and the patient is protected against worsening of this process).