More: Don't let the pink harness fool you, Lucy was a bad-a$$ pup. From hiking to running while we would cross-country ski, this little girl was a fighter. Why past tense? Lucy was diagnosed with liver cancer in 2016 and sadly passed 1 week later. She had no previous symptoms. We found out her liver was covered in at least 14 tumors only once she was showing lethargy. Cancer sucks.