Watch this cute puppy video, help feed rescue dogs

What's the power of puppies?

They brightened the day at a preschool, retirement home and gym.

The delight the puppies brought to the young, old and athletic appears universal.

Watching the puppy video also will help shelter animals.

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For every view the YouTube video gets before April 23, Purina will donate a pound of dog food to Rescue Bank, up to 500,000 pounds. Rescue Bank is a nonprofit that offers dog food to rescue and rehabilitation facilities.

With more than 480,000 views, the limit is close.