Tuesday was an ordinary day at the Humane Society of Durham when an ordinary-looking man arrived at the animal shelter.

The man, who looked to be in his early twenties, said he'd like to make a donation and handed over a plain white envelope.

The worker at the front desk didn't look in the envelope.

"I asked him if he wanted a tax receipt and he said there was no need for that," she said.

He left and that's when she saw the bank draft for $25,000.

"I was dumbfounded, just looking at it. My mouth fell open and I let out this scream and instantly burst into tears."

(READ the story from Canada's Metro News)