Choose an organism that your familiar with, and explain how the three parts of the theory relate to that organism

I am going to pick my dog as the organism. My dog is made of many cells just like me that do multiple different things. My dog is a living thing there for the basic unit of my dog are cells like all organisms. When my dog got a cut while running into a bush. A few days later you could not tell that she had a cut. Cells from her body made more cells to cover and heal the wound like it states in the third statement, all cells come from existing cells.