hyper crazy behavior

My puppy is 16 weeks. The last week he has become extremely hyper. Why did he change so much in just one weeks time?

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Jan 06, 2015
Crazy Jack behavior NEW
by: David

It's probably just a growth phase. Puppies, especially Jack puppies have a lot of energy. As he gets older, I'm sure he will calm down a bit. In the meantime, work some of his energy out by walking and playing with her.

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