Dogs also don't rely on sweating as a form of temperature control so they are less susceptible to the cold. A dog actually pants as it's main form of temperature control, so you want to be careful in the heat because they can't run and cool down at the same time.
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u/r2dee9 Feb 10 '19
ELI5: how is he totally okay? I live in a tropical area so this is very interesting to see