an animal tag comprising: a one-piece animal tag retaining member made of molded material, having: a first part comprising a female opening connectable to a male member for coupling the animal tag to a body part of an animal; a second part configured to accommodate one or more electronical components capable of obtaining information relating to the animal to which the animal tag is coupled; an intermediate part, located between the first tag part and the second tag part, having a form of a latitudinal recess for enhancing a flexibility of the animal tag.