Look closer at the image caught between time0:47 and 0:48. Pause it. Do you see long slanted eyes, small nose and a horizontal slit for a mouth in the dark features. Could that be a grey, briefly caught in the blurry camera shot, just before he passed out? Interesting, only if you believe that...
Motherly instinct. It would seem, that even dogs know, every baby has the right to live! Good pup!