Why is my dog growling at the mirror at night?

The sense of smell is vital for a dog as he perceives the world around him by not what he sees, but by what he smells. If they do, many puppies will stop in front of the mirror and begin to bark, growl, show their teeth, snarl, or even whimper at their reflection.

Why is my dog obsessed with the mirror?

Some dogs encourage their reflection in the mirror to play with them, whilst other dogs become tense, bristle and stare at it. Some of them astonish themselves with the response of the reflection and they even dare to approach the mirror to find out what is hiding behind it.

Why does my dog not like the mirror?

Dogs may or may not truly see themselves in a mirror. If they do see themselves, he may have grown bored of the image. If they do not see it, some believe it is the lack of understanding about ‘self’ and reflections. Either way this is perfectly normal behavior that most dogs exhibit.