Formal:
* Maialino: This is the most common and formal way to say "little pig."
* Porcellino: This is another formal option, often used for piglets.
Informal:
* Porchetto: This is a more informal term, used for a young pig that is roasted whole.
* Suinello: This is a very informal and affectionate term, often used for a pet pig.
Example:
* "Il maialino è molto carino." (The little pig is very cute.)
* "Il porcellino sta dormendo." (The piglet is sleeping.)
* "Ho mangiato un porchetto delizioso." (I ate a delicious roasted pig.)
* "Il mio suinello è il mio migliore amico." (My little pig is my best friend.)