For the upcoming BBC documentary series Tiger - Spy in the Jungle, filmmakers enlisted the help of elephants to capture the tigers with hidden HD cameras. The large "trunk cam" (pictured here) was the most ludicrous of the devices carried by the elephants, while the smaller, lighter "tusk cam" proved to be easier for the elephants to carry for long periods of time. In addition, various log and rock cams were placed along the ground and activated by motion sensors when animals came close.
Apparently elephants move so smoothly that the improvised footage resembles that shot with a Steadicam rig. Look for the show on BBC One this Sunday, March 30th.
Here's what it looks like when a sloth bear checks out its reflection in the lens.