We just recently brought home our very first boxer pup, Ruby, and her big sister is not adjusting well. Dottie, our 8yo Jack Russell, is very bent out of shape over the new addition. You can see that she really wants to play with Ruby, but the minute the pup gets too close, she snarls and barks until Ruby goes sulking away. Now, if Dottie goes up to Ruby to sniff and whatnot, she wags her tail all excited! I understand it will take some time until she accepts her...she's been the only dog in our family her whole life, so I'm not pushing the issue. Just wondering if there is anything I can do to help them get along. I make sure to pet, feed, play etc...with Dottie first, so that she knows she's not being replaced, but so far, no luck. Any tips? Thanks!