If you have ever had or currently have a puppy, then you know they arequite fond oftheir tails. Sometimes puppies even chase them around in _(1)_ like a little tornado. This is normal behaviorfor young dogs and even older ones. There are a few reasons why dogs like to chase their tails, both good and bad.
One reason dogs chase their tails is that they are _(2)_. If they are left alone at home all day, chasing their tail lets them play with themselves. Also, dogs may chase their tails simply _(3)_ they are playful. When they look behind, they see something that is moving, and they will want to play with it.
