Ace has been with us for almost two months now, he's adjusted very well and overall is a really good boy. Although he and Caney don't really play other than running together in the yard occasionally, they get along just fine and I believe they do enjoy each other's company. Tonight however I was worried that they might fight. We have an evening routine when we come to bed, I always refill the water bowl in our bedroom with fresh water and Caney slurps down nearly half of it before going to lie down on her bed. Tonight she did exactly that, then Ace got up from his bed and came over to the bowl for a drink. Caney was already lying down at that point, but she got up from her bed to follow Ace to the bowl and stood behind him, staring him down as he drank. After about 10 seconds she moved in and stuck her head right next to his, basically claiming the water bowl. Ace got the hint and took a few steps away towards our master bathroom. Caney did not move from the bowl. At this point Ace was cornered in the bathroom with his back still to Caney, both dogs were not moving. Then we heard Caney start to growl under her breath! That's when we broke it up and told both dogs to go lay down on their separate beds. They did. Although I don't think Ace did anything wrong in this particular scenario, I must add that in the time Ace has been with us we've noticed that he doesn't have much concept of personal space. He lies on Caney all the time, will push her out of the way for attention or to drink out of the spigot in the yard, etc. Basically if there's something he wants or somewhere he wants to be, it's like she's not even there. I've struggled with trying to figure out if this is a dominance issue or if he's really just clueless. But it's obvious after tonight that Caney is getting fed up with it. What do I do to keep this from getting worse?? When should I correct them, when should I let them figure things out?