My younger V is extremely hesitant to strangers. He is good around people if you give him a few minutes but strangers approaching him he's not a fan of. So we go on hikes and they are offleash most of the time. Sometimes we turn a corner and there's another hiker walking towards us. He goes into this bark bark bark mode. I cannot stop him. I tell him commands he knows like "sit, woa, stay" and he just continues to bark whether i have him in front of me or not. He disregards everything and everyone and just barks. My other V who would normally wag her tail at a stranger goes off his energy and barks a bit, any advice? Its embarrassing to say the least, i tell the stranger they are friendly and some people who like dogs will get lower and stick a hand out for sniffing and such and he just goes crazy and it never stops till they leave.