Nobody is a winner here...... Dutch veterinarian beaten to a pulp in act of 'senseless violence' by furious owner of a chihuahua he killed (WARNING: GRAPHIC IMAGE) BY Laura Bult NEW YORK DAILY NEWS Updated: Friday, December 18, 2015, 10:41 AM Facebook Veterinarian Hank van der Mast was attacked by the owner of a chihuahua that died. A Dutch dog lover went far past the lengths one would go for a man's best friend when he brutally beat his veterinarian to a pulp for accidentally killing his beloved chihuahua. Hank van Der Mast, a Netherlands vet, was savagely attacked by the owner of a chihuahua that died while under anaesthesia for an operation, according to Dutch news site MetroXL. A friend of Mast, Theo Vermaten, posted a shocking photo of the badly beaten vet, blood running down his swollen face. “This definitely falls under the heading: senseless violence,” his friend captioned the gory photo in Dutch. Mast was cleaning the teeth of two chihuahuas, which required him to put them under. One of the dogs never woke up. Eric Isselée The vet was cleaning the teeth of two chihuahuas (not pictured,) which required him to put them under anaesthesia. One of the dogs never woke up. The outraged owner, who was not identified, showed up at the veterinarian’s office four days after the dog’s death and, when he was told that the doctor wasn’t in, drove to Mast’s home. When Mast opened the door, the furious chihuahua lover starting throwing fists. Mast’s injuries from the attack include a broken nose, black eye and bad bruising to his face. The vet reported the assault to the police and an investigation is ongoing, authorities told MetroXL.