Moscow, Idaho (CNN) - The dog days of summer are over but these pups don't know it.
Check out this canine swim party in Idaho.
The "Howling at the Hamilton" is an annual fundraiser to benefit the Humane Society of the Palouse.
When the park closes to humans for the year, the dogs take over before the pool is drained.
Nearly 350 dogs took part in this splish splash fundraiser.
The dog party raised more than three-thousand dollars.