If it is a plastic tag, you will need to cut the post part that joins the two sections. The steer will not be happy about you fooling with his ears. It will leave a hole.

If it is a metal tag, I would just leave it. They can be removed with great difficulty, but it will be more likely you will rip his ear trying.

Thank you, it is a plastic tag. So you're saying that I just need to get between the rubber backing and the ear with a pair of wire cutters?

Got it - thank you. I was expecting the metal rod to be much stronger than it was. It actually cut quite easily.