I was getting ready for Halloween one year, and was wearing a masquerade mask and a Victorian outfit. My dog woke up from her nap at one point and when i turned around she was walking towards me in a stalking fashion. The same stance i've seen her hunt many critters in (rip critters t-t ). Her body was tense and looked like she would take off at full speed at any second, her mouth while not snarling was open and her eyes were locked on. I had never been afraid of my super goofy dog before but at that moment my hairs were standing up, my instincts told me i was in danger. I snatched off my mask really fast and said her name. Thankfully the instant i did that she just started jumping around like an excited dog when their human gets home. I own a breed that's known for being EXTREMELY friendly and non aggressive.