I have fenced off bunny area so dog and buns can't touch. I used metpost spikes you drive into the ground, these hold a wood post. I then used palisde fence panels which are chest high and a matching gate with spring closer and latch. I have then staple gunned mesh bunny side so neither can stick noses, paws etc through the other Side. I only let buns out in theeir bit if dog not out, but always best to be safe than sorry, especially if someone else I'd doing them. I never free range unsupervised.