It is an anglilicism used to determine the people who like pets (derived from pet, which means pet). You may also be a person who likes to use PET (polyethylene terephthalate, ethylene polyterephthalate, polyethyleneterephthalate or polyethylene terephthalate, a type of plastic used in the manufacture of packaging and fabrics).
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list