OK, I understand ur doggy situation clearly, I will tell what exactly happened.
UR reflection was falling/created on the screen or may b thr was a mirror infront of ur desk. UR Dog saw that & started barking - u being the idiot thght that its looking at the image in this webpage.
Go n apply some cream that ur fav. bollywood star recommends to u, bollywood films r not working......atleast the cream may work for u ......... LOL !!
