A dog owner says her pooch saved her life, by repeatedly pawing at her armpit, which eventually alerted her to breast cancer. The 61-year-old says her chihuahua Flag started the odd behavior years ago, constantly hitting the underside of her arm with his paw. She originally dismissed the behavior, until she spotted a small lump under her breast and started to suspect her pup was trying to tell her something. Kristine Richards, the retiree from Wellington, Somerset, went to an oncologist and was diagnosed with an aggressive form of hormone sensitive lobular breast cancer, which had already spread to her lymph nodes. Kristine reports that Flag stopped pawing at her arm after her first round of chemotherapy—and hasn’t done it again since.