I once had a pet Gerbil. He was called "Killer".
I used to have a dog named Dofi. His nickname was 'Dodo'! (RIP Dodo)
His brother, Fido (fee-doe, not fye-doe), has the nickname of 'Fifi' or 'Fidorento' (which is actually pun/a play on the Portuguese word "fedorento" meaning "stinky"! XD) So it's not just you!
My dogs name is Heaven so her nickname is Heaven Lee sometimes..My cat Cotton i will call her Cotton Candy and We had a cat named Shadow so she was nicknamed Shadow Marie but unfortunately Shadow passed
My cat's name is Marty but I call him Piglet cause he's chubby.