A wolf notices the camera and wisely decides it's best to avoid this contraption that could only be the work of humans. Note that this was during daylight so he's not reacting to a flash, and this was not the first daylight shot of the day so he did not hear movement of the IR filter.
A mountain lion passes the same camera in the typical feline oblivious manner.
There's variation within each species, but generally wolves and coyotes are easily spooked if they notice trail cameras, while mountain lions and bobcats are often oblivious.
Browning Spec Ops Advantage #trailcamera
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