Sausha Seus, who handled the wolves that played Lobo and Blanca in NATURE's "The Wolf That Changed America," talks about the experience of filming live wolves.

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The plan was for Harry and me to carry out reconnaissance on Ellesmere Island, one of the most northerly islands in the Canadian High Arctic.

After only 40 minutes, we came across our first wolf of the trip. We were euphoric; like two children having just reached the seaside after a long car journey.

Having met Bertie the previous day, we woke up determined to try to get further east to see if we could stumble across his den.

The beautiful female wolf came sauntering along the beach heading straight for us, totally unperturbed by our presence.

We hatched a plan to create a small camp near the den to monitor activity until the rest of the crew flew in by helicopter in six days' time.

It still seems quite bizarre to me to have rain in this land where I'm normally struggling to get comfortable due to the intense cold.

Friday was the big day when Jonny Keeling, the producer, and Mark Smith, the cameraman, had been due to arrive with the camera gear and other supplies.

View additional resources, online and in print, for NATURE's "White Falcon, White Wolf."