Once a year, with the dog days of summer behind and autumn just ahead, the Lakeview Waterpark in Nampa, Idaho, opens exclusively for dogs. On the last day before the park closes for the season, playful pooches replace humans in the park’s pools, frolicking and cooling off in its sprinklers.

The park’s dog day gives pups and their owners an opportunity to get together. It also serves as a canine-themed fundraiser: This year, according to NBC, the money raised will go towards building a brand new dog park. In the video above, watch as the excited pups frolic in Lakeview Waterpark’s pool and joyfully shake water on the video's camerapeople.

[h/t NBC]

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