littlebabyjesus
one of Maxwell's demons
Cows have characters sure. They have friends in the herd different favourite spots, are spooked by different stuff. Have emotional responses peculiar to them.It's totally anthropomorphic, dogs have "characters" because they've become socialised through interaction with humans down the millennia. Cattle do not. Don't project your experiences of pets onto all animals.
What else do you think character is. Often people do a reverse of anthropomorphising, which is thinking humans are more different from other animals than we really are.