I have two Newfoundland Dogs, a male and a female. The males name is Bruce, and the females name is Magz or Maggie. I took the first initial of all three of my sons along with the first initial of their last name Z and combined all the letter to come up with Magz.
I don't have dogs, but I'll tell you about my dad's dogs. Spike is a puggle. My dad bought him a little spiked collar as a joke saying it would him look mean (even though he isn't) and that's why he said his name is Spike. When he got his Chihuahua, he said it needed a tough name. My mom chose Lobo, but Dad said he was too little to be a wolf, so he decided to call him Poco Lobo.