If Drake remembered anything of wolves, or for that matter even dogs, he'd understand that this steady watchfulness might not be ordinary. But he doesn't, and as far as he knows this is ordinary for any animal. He's watching them, why shouldn't they watch him?

Besides, their stillness is making it much easier to get a nice picture or two for data collection (and bragging and proof) purposes even though he's not entirely sure of what category he should be filing them under. Nothing in his training or experience among the Brutes really told him what to do when surrounded by nature and being eyed by a pair of canines.

It also means he doesn't understand that he shouldn't approach wild animals. After making certain he has a decent record, the device is put away and sunglasses back on (finally he understands the PURPOSE of sunglasses, there weren't lights bright enough for that in the Junkyard usually), and then he levers himself to his feet and begins looking for an easy way down. He could just jump, it's not that far really, but loud noises and fast movements would reasonably set anyone off.

It seems the wolves won't have to do any intercepting, he seems intent on doing it himself, with all the utter guileless fearlessness of a child, not an adult.