Depends on the cow and the context I'd imagine
For example I feel bad for some lolcows when the trolling goes too far. I think its fine to laugh at a cow from a distance but when people start trying to tip the cow that's when I start feeling bad for them, depending on the cow of course. If its some pedo or zoosadist then I don't mind.
But if they're (mostly) harmless lolcows I don't agree with fucking with them too hard. I don't think its a good idea to dig through DSP's bank account just to prove he spends ridiculous amounts of money on a a wrestling game, something we already all knew. Hacking into wings of redemption's playstation account that has thousands of dollars worth of games and trying to get it banned is also going too...