So this is a huge bummer. I've been walking my neighbors grey for months now. We get along, no issues, super friendly. The ONLY thing that is different and coincides with this new behavior is that the neighbor's boyfriend and his dog weren't there this past weekend and he often will take her and his dog out together. Anyways, normally when I enter the apartment I will announce so the grey knows I'm here. I'll approach the crate and she will get up, sometimes slowly, sometimes quick and all excited. I then go to the latches, unlock, and she barrels out into my arms. Then we go outside for a little walk. Because the boyfriend was gone for the week, she asked my to walk the grey this past fri and sat. So Friday I go in to the apartment. She is not getting up at all, seems to not want to go outside, but I approach and reach for the latches. She immediately starts growling HARD. I backed off because it was obviously startling. Tried again and her ears went back, snarling more, barking, pretty intense too. This was repeated both Saturday when I tried and today. I tried coaxing her up with a treat? To get her excited and wanting to go out maybe. Didn't work. I go for the latches with my hand and she freaks out. Really aggressive snarling and growling. The owner says she is maybe just being difficult, doesn't want to go outside. Maybe doesn't see me as the alpha?? I don't want to respond to the grey with anger or aggression obviously, but I do not think it would be wise to try and open the crate when she is in that state. I feel it's a warning to have me back off. So, why is this suddenly happening and happening every time the past three times I've tried to walk her? How can it be remedied or is this a thing now? I have to admit it is pretty scary to see her act like this. Thank you for any advice.