When Shannon Stevenson's cat, Lexi, went missing from her northeast home two years ago, she searched everywhere but eventually gave up hope of ever seeing her grey tabby again. Then, on Wednesday, Stevenson got a phone call out of the blue from the Calgary Humane Society: they had Lexi — but she had suffered a gunshot wound to the leg that would likely require amputation. "I was very shocked. I just thought she was gone. I'd mourned her already," Stevenson said.