Family Quotes in A Dog's Purpose

How we cite our quotes: (Chapter.Paragraph)

Quote #4

I decided my time in the Yard had prepared me to dominate the puppies in my family, and was irritated they didn't' feel the same way. (5.17)

Dog families appear to be defined by competition between siblings. Is that any different from the siblings behave in human families? If so, how?

Quote #5

My new mother wouldn't be joining me, I realized. She was staying with the family. I was on my own. (5.39)

Our narrator doesn't realize that his new mother's main job is to pop out new pups. She doesn't have any special attachment to her family, because they're all taken away, but she doesn't know any other life.

Quote #6

"The boy needs a family around him while he rebuilds." (16.49)

Again, we see the importance of family to a human. This experience shapes the dog's belief at the end of the book that Ethan needs a family in order to be whole. Is the dog right? Why or why not?