I got a quick question for you since it seems like you have a lot of experience with training and what not. Why is it that some dogs just hate eachother for no reason? We have some dogs that are completely fine with every single dog except for 1 and with those dogs just seeing them their moods will change from calm to aggressive. It's really weird to me we have multiple dogs like this and because they are good with the large majority of the group we keep them out most the time and we'll just switch them out and bring in the other one every hour or so. I just find it so bizarre. These dogs don't even have to see eachother a lot of the time sometime just the scent of the other dog and they freak out. We have this pit bull named Lucy who's good with pretty much every other dog except for one of our black labs named Fiona. Both dogs are super sweet but the moment they see eachother they instantly would fight given the chance? I just don't get why dogs will pick one dog out of a group of 50 and be super aggressive towards that one dog and be fine with the rest. Sorry if this is a super long question lol I was gonna make a post asking it but I figured I'd ask you first. Thanks in advance!