This is definitely a fun thread!
Rascal (2 year old pug) - Bubba, turkey butt, turd
Calliope (5 month old pug) - Callie, Cal Cal, Cawie, evil girl
Sassy (mini mare) - Sassy sue, Sassy pants, sassafrass, miss sassy
Wilbur (mini gelding) - Bub, Sweet boy, kissy face
Lucky (pygmy goat) - luck...