Sold 6 of our fall calves to one of our neighbors last March. They're currently out of town so I'm taking care of their animals, etc. Even though the calves we sold now have new ear tags I recognized them immediately (out of 24) and they absolutely remembered me, came right up as soon as I called their names (yes, I name them, don't judge). I know a lot of people think cattle are essentially stupid and have no distinct personality but I firmly challenge that notion.