Our brains are not the sharpest right after waking up, especially when we are asleep during the day.
So, at first glance, everything can be more confusing and surprising. Now imagine that this dog comes and sees this unannounced guest at the door.
Pooh wakes up to see a bear whose faces are separated only by glass.
It takes the puppy a few seconds to understand what he is seeing, and then the guard dog mode is activated. The bear had no chance.
