Why do dogs get angry in mating season?

@anshnav (479)
India
February 21, 2008 3:07am CST
The mating season just passed and my dog is all calm now but during the period my dog used to get very aggresive and used to growl at me even if i pulled him out. Is this normal behavior of a dog? Is it that dogs tend to do that during mating seasons?
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