This is Masadi, the male mexican gray wolf i had the honor of working with this last semester during my internship.

He was telling off his reflection. This subspecies of wolf is so endangered, that all captive MGWs are owned by US Fish and Wildlife, and therefore have to be kept under specific requirements. These guys have the only 1-way glass in the zoo, so though they could certain hear/smell guests, they can't see their faces, and so will actually get remarkably close to the front of their exhibit (when kids aren't in there howling at them -__-).
However at certain times of the day, the sun hits the glass just right, and Masadi thinks that there is a look alike MGW coming to take over his territory...
"MR REFLECTION! WE MEET AGAIN!"

The Mexican gray wolf is the most endangered subspecies of graywolf, as well as the smallest.