Brands, cuts and bruises all give leather a certain character which some people admire., while others abhor. To each his own, utilize the scars to good effect and you will come closer to pleasing most of them.
Chrisash, ear tags have been used in N. America for decades. And branding has not been totally abolished in Europe. Tatooing inside the lip is also used here, as well as RFID chips, especially on high value stock. Ear notching is still used on some stock, as well.