Your dog probably has a lot of weird behaviors. Learn why he does them and where he learned them with this list of 25 random dog behaviors explained.
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Image source: ohwick
Dogs use their tails as a form of expression. Since they cannot communicate with you verbally (minus a bark, of course), dogs will show their emotions through their tails. When your pooch is happy, she'll wag it eagerly, and when she gets in trouble you may see the tear-jerking tail between her legs.