I was a little upset today when I took Clover to the dog park. As SOON as she entered the area 2 dogs charged up to her and began chasing her around barking non stop. She looks scared, and they just kept chasing her so I called her to me and she came and tried to hide behind me. The 2 dogs kept at her so I pushed them away and told them to get back. The owner came up at this point and pulled them away, I'm assuming he was annoyed I pushed his dog away cause he didn't apologize.. He let the dogs go again and they went right back to her and did the same over again. I was annoyed/upset and was just going to leave but he grabbed them and left first. You'd think he'd say sorry, clearly I was upset about this. What would cause the dogs to do this? Clover isn't dominant at all. She had her tail between her legs. There were other dogs there they didn't bother.