When his beloved Great Pyrenees Malcolm died of bone cancer at age 6, Luke Robinson resolved to learn why. “I didn’t even know dogs could get cancer,” he said. The nagging mystery would send Robinson walking over 2,000 miles from Austin, Texas, to Boston with his other two dogs to raise awareness for canine cancer. It would also inspire his launch of an organization devoted to finding an answer — through the discovery of links between dog and human tumors.

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