Dogs are highly human pets that can detect emotional changes among their owners, presumably through a combination of visual and hearing-based sensory information.
It's normal for a dog to detect a change in the master's condition, but it's amazing for a dog to sense the illness of the master and even to do something to draw the host's attention to it and heal it early.
A woman in New York State adopted an old blind dog in an animal shelter, which she did not reject because she was blind and old, but rather took care of.
A few months after the adoption of the dog, the dog kept snuffing her nose, and seemed to remind the owner of something and the woman immediately arrived at the hospital and found her nose red spot as a sign of skin cancer.
Fortunately, with the help of a dog, a woman who had discovered and opted for surgical treatment at an early stage had succeeded in saving her life, despite the scars on her nose, and had chosen to repay her in such a way as to give her thanks.