Thanks to Gray Dawntreader, I am now looking into getting my Tiffy microchipped because we live in a mobile home park, and we just sometimes let her outside to run around. Especially in the mornings, she just sometimes goes out by herself and does her thing. But she stays in the front of our house. This has left me very skeptical. Is microchipping the same price for all dogs? Or do they charge by size and breed?