I spend an enormous amount of time choosing a name, so once I decide, that's it. Course they do end up with an endless number of nicknames, but the original name is still their official name.

They did have previous names from the breeder though. I can't for the life of me remember Murph's, but for the others:

Oz was a Cosmo
Gulliver was a Lee
Madison was a Trudy

Par...