The fact that a dog has about 1000 times better sense of smell than a human is interesting yes, but the weird thing is what they use their ''skill'' for, Like take for instance: they sniff each others up their asses to get to know each other, not exactly tempting if you had 1000 times better sense of smell than you have now is it?
Not only that, but somehow most of them chases cats, for what reason really? Is it their primitive dog instinct telling them to eat the cats? Also they tend to dig bones down in the ground, but why the hell do they do that? One of many dog mysterious yet to be solved, and they call this weird creature mans best friend. o_O