Pigs in "Home sweet Homer"

This is when Circe turn her own Cat into a Pig 

with her Medallion after he Cat interfered and disrupted her Spell. 

Look! Circe has turned Ariel into a Pig! 

Circe has turned Homer and Scrooge McDuck into Pigs! 

When Circe's Medallion was broken, 

her Cat changed back to a Cat and then she 

looked at her own Pool and became a Pig 

and then Scrooge, Homer, and Ariel turned back from Pigs.