Jensen wrote:
My art teacher had a dog named Viggo. "That is the craziest name for a dog", he giggled, - until one day, he met another man with a dog. My teacher presented Viggo by name, expecting an astonished look in the other mans face, - but he, in turn, calmly presented his dog as --- Hans!
Yay! Another Viggo!! My collie was named Viggo. He came to us with that name. He was replaced., and we wanted to keep the name his previous owner had given him.
Also known at least two dogs named Oskar.