Why does my dog bark at my cats reflection in the door?

Mandy F

New member
I have a 6 year old shih-tzu. At night he always barks constantly at my cats reflection in the door. Is there anyway i can stop him? and also in the daylight it seems like he tries to find things outside the window to bark at. I dont know why he does it it gets really annoying. is there any tips to prevent him from doing this?
 
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