Super weird, please help

[hyphko]

So just earlier today, I took my dog Rocco to the dog park. Usually he has no problems with anyone there, but today he was acting very strangely. He's always been shy around men and usually he'll just leave them alone at the park. There was a man standing by himself in the corner minding his own business then all the sudden Rocco just starts barking and growling at him and he won't leave the man alone. I got Rocco and we left but that was an extremely strange occurrence. Does anybody know what went down there? Because it's very worrisome to me.

[Doreen]

Was the man there with a dog or was he just lurking around. If so, Rosco might have been warning you that this guy was not a nice man. Dogs sense those things.

[AussieGirl]

[bruinsBoxers]

I agree too .
Dogs seem to have an ability to sense if someone is up to no good ( or just not a nice person ) . Titan had on a few occasions singled out a certain person and would stare them down or growl , and as soon s that person was gone he would be back to his normal happy/friendly self .