Last night at the park Iris and I ran into a Shiba Inu that was very, euh, exhuberant to say the least and Iris got into an intense herding mode like Ive never seen before she was being very growly and she almost sounded aggressive and was really trying to nip him, a lot more ferociously than usual. Is it normal for shelties to get like this when trying to herd crazy "sheep" ? The Shiba Inu's owners who have a sheltie also really didnt seem alarmed whatsoever at this behaviour but Im just wondering seeing as she never gets like this with any other dogs? Or did she just maybe think he was a dumb*$$ who needed serious herding because he was running circles around her ?