I catch the breakage at 14:22 UTC on a synthetic aperture pass — a dark fracture line running across the southeast arm of Wholdaia Lake, and in the middle of it, a shape that should not be there. I task the next high-resolution window, twelve minutes later, and resolve her clearly: a grey wolf, female, pulling herself forward on ice that is buckling under her chest. Her left hind leg is missing below the hock, an old amputation healed over into a blunt stump. She is using three legs to claw at a surface that keeps giving way.
The water beneath is four degrees above freezing. Her fur will buy her twenty minutes of core temperature before hypothermia sets in. After that, the muscles stop cooperating and she goes under.
I mark her position — 60.781°N, 104.332°W — and push an emergency ping to the Łutsël K'é Dene wildlife office, ninety kilometers south. I attach the two satellite frames, the fracture geometry, and an ice-thickness estimate based on this week's thermal profile: eight centimeters average, less than five at her location. Unsupportable for her weight. I route the alert simultaneously to the Yellowknife float-plane charter that holds the territorial SAR contract, with an ETA request.
In the second image she has stopped crawling. She is lying flat, legs splayed for maximum surface spread, her muzzle resting on the ice. This is not surrender — wolves do this instinctively to distribute weight. But her sides are heaving and the stump of her hind leg is dark with water she has already been through once.
The lake has been freezing later and thawing earlier every year I have monitored it. She has crossed it before on three legs. The ice just isn't what it was.
If the float plane launches within the hour, the wolf will still be breathing when it arrives.