You could make a tapered piece to fit the handle slots on the Light Cannon's body, then attach it to some sort of arm.
A few problems to consider:
The light is comparatively heavy and bulky. It will be a handful on a tray arm.
The light is very bright with a significant hotspot. The diffuser won't help all that much. You won't obtain even wide angle lighting coverage.
It will be overwhelming in close up situations. Critters may not stick around when you stick that thing in their face.
For photography you will need to have the light turned on most of the time. You are not supposed to turn those HID lights off and on alot. There is a significant warmup period after you turn the light on.
However bright it seems, it may not be bright enough to stop action on a moving critter.
Finally, the color balance may be a bit off for imaging applications.
IMHO, a compact strobe would be a better choice.