Canada wildfires: Blazes spread across more than 2.5 million acres
From the Cowboy lassos runaway steer on Michigan highway, and more of today's top videos series
Canada's 2.5 million acre wildfires draw U.S. crews to battle the flames with more help on the way from Australia and New Zealand.
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Dashcam footage from a Michigan State Police patrol car shows the moment a runaway cow was l…
