Hi all. I took my 6month old patterdale/Lakeland out with some other terriers xmas to a place where we knew there were lots of rats. After watching the other dogs get a few kills my pup decided to join in. Within a couple of minutes she chased 1 down and grabbed a rat, the rat turned and bit my pups nose and locked on. 1 of the other dogs grabbed the rat and pulled it off my dog and shook it to death. The rest of the morning she was fine and chased a few more rats about. Since I've been home with her she's acting really strange, she won't answer to her name and won't go outside. Does anyone kn