A US man has been saved from brain cancer after a headbutt from his dog led to him seeking treatment for a potentially deadly malignant tumour.
Dave Arnold, district attorney for Lebanon County in Pennsylvania, crashed into his dog during a rough and tumble game and the resulting headaches saw him seek medical treatment, where doctors found the tumour.
Local Republican Party official Casey Long told PennLive.com: "Dave's dog ran at him and headbutted him."
"He was having headaches afterward. He went to his family doctor the Monday after the conferece meeting. They diagnosed him with a concussion. Then a few days later, he started having vision issues and went to his ophthalmologist.
"His ophthalmologist said this doesn't seem like concussion issues. You need to see a neurologist, which he did last Tuesday. That's when they found the tumour."