HEARD about the dog that wet the rug?

This one flooded the joint.

After receiving a panicked call from another business in his Northern Beaches complex, veterinarian Paul McGeown rushed to work just before 7am yesterday to find water flowing from the Northern Beaches Veterinary Hospital.

"I was in shock and awe," he said.

"Initially we thought a water main had burst. We feared the worst."

Instead, during the night an adventurous pooch had managed to get loose in the veterinary premises and knocked a laundry tap that opened the floodgates.

Mr McGeown asked for the escapee's name to be withheld because it was a first offence and due to the unusual circumstances.

"He's such a sweet dog. We can't believe he got out," he said.

Despite being surrounded by unpredictable pooches on a daily basis, Mr McGeown said this was "one of the strangest" incidents he had seen in his working life.

"We've had plumbers and electricians here all morning," he said.

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Mischievous dog causes flood at Northern Beaches vet