By Megan McCluskey
September 9, 2015

Monday was the dog day of summer for our four-legged friends in Calgary.

The Doggy Paddle, an annual charity event, allows pups to take a plunge in Calgary’s public pools as a last hurrah for summer. The Calgary Outdoor Swimming Pools Association has organized the unofficial canine holiday to mark the end of the past three summer seasons. Over 300 dogs participate each year, raising roughly $800 for the Calgary Humane Society, according to a report on CBC News.

And for anyone worrying about the cleanliness of the pools at the start of next summer, we can put your mind at ease.

“Once we are done tonight, we are done – it’s hairy,” Jennifer Zacharias, an employee of the Calgary Outdoor Swimming Pool Association, told the CBC. “We do a whole cleaning process before and then we start to dump the water and next year we’ll just refill with clean water, start all over again when the summer season starts.”

Write to Megan McCluskey at megan.mccluskey@time.com.

SPONSORED FINANCIAL CONTENT

Read More From TIME

EDIT POST