Does the group have any recommendation for a trainer for dog aggression? My corgi (5 years) has been exhibiting an excessive amount of aggression towards other dogs lately, she's perfect with humans. The hard part is that she only exhibits it when the other dog gets close and by then it's a bit too late, so she doesn't really give much advance warning. She use to be great at dog parks, but now because of this I can't really take her. It's a bit of a catch-22 as I think she needs more interaction, but I can't give her the interaction she needs. Any suggestion would be awesome.