Joel growls at me all the time, I say "Are you mad?" And he'll growl but he doesn't do it the agressive way. I actualy taught him to growl for something so he wouldn't be barking all the time, but yeah if your pup is doing it agressively I would do a "Timeout" like a basket or a box over him, lol thats what worked best for Joel, or any separation from me was a time out for him
