Final answer:
Tattooing and ear tagging are forms of identification for swine animals.
Step-by-step explanation:
One form of identification for swine animals is tattooing. This involves using a special tool to place a permanent mark or sequence of numbers on the skin of the animal. Another form of identification is ear tagging, where a tag with a unique number or code is attached to the ear of the animal.
Learn more about Identification of swine animals