Hi, I got a young female beagle-harrier a few months ago. (Late September). She was the runt of a litter of eight (not sure if this will play a part). She's about four months old now and has grown very quickly. She's been to the vet for all of her shots and has been given a clean bill of health every time. This dog is very intelligent. You can see it in her eyes and she learns exceptionally quickly (she was house trained and asking to go outside to do her business within the first three days). However, she is very willful. She knows that she's not meant to chew certain things for instance and will move her toys next to them, wait until she thinks you're not looking and start chewing them. She's been getting better on that front however. Over the past couple of weeks however, she's developed a slightly worrying trait. She will bark quite aggressively at people (this is in the family we're talking about) and in the garden start nipping at your heels and trouser legs. The bites don't actually hurt but these aren't playful nips either. There does seem to be a certain amount of malice behind it. She's quite tense when this happens and knows she's doing wrong as she will attempt to run away if approached. There seems to be no reason for these (outbursts). She will be quite fine in the garden and then, a few minutes later suddenly come over to someone and start nipping. In terms of exercise, she is walked outside once a day (confinement regulations prevent longer walks) for half an hour to an hour over one to two km through a small village. She is also allowed into a 2 acre fenced garden to run around for 20 minutes to sometimes 3 hours at a time. Right now, she's always accompanied as she has escaped once or twice in the past and whilst these escape points have been fenced in, I'm still paranoid about her escaping. It's in the garden that the majority of these incidents occur. She usually only targets one person at a time but has been known to "switch" on occasion. I should point out that she's fine with people outside the house. If anything, she can be a little too eager to greet them and shows absolutely no aggression towards other dogs. My family have had several dogs before and I've grown up around them in many respects, so I wouldn't call us novices in that regard however none of us have ever seen this sort of behavior before. I think that this is just a "phase" but if anyone could shed some light on it, I would be grateful.