Yeah. They are ridiculously social creatures and I absolutely saw them mourning a friend.

(But they can be assholes as well. Towards humans,but also between themselves. One of the funniest childhood memories I have is a cow intentionally toppling another cow (T-boned crash basically) and then shitting in its face. Comment of the carer: “yeah,she does that when her peers piss her off. She tried to do that with me as well,but missed and headbutted into a wall. See the missing brick? That was her”)