Puppy!

Meet our new puppy. His name is ByTor. Pure Siberian Husky. I haven't had a dog since I was a teenager. My last dog, Kirky died of old age and broke my heart. I figure I am ready now for the responsibility and companionship. He is very good with the boys. He was bred by a woman who ran a daycare and loves kids. I will elaborate as I have time. In the picture he is introducing himself to Cocoa, star of a previous blog. They get along fine, now.
Quiz: Who can tell me the source of the name ByTor?