I call my Tia Rose:
Tee Tee Mouse
Tee Ta Mouses
Mrs. Mouses or Mrs. Mousey
Pony Princess (cause she runs like a little pony)
I call my Codie Lee:
Coda Wee Wee (cause he's a peeing machine LOL)
Coda Falafel
Coda Bunny Buns
I have a bunch more nick names but these are my favorites.