Shortly after Billy's birth in 2017, Jimmy Kimmel revealed that his son had been born with a rare congenital heart defect and has given updates ever since.
Nearly one out of every 100 babies is born with some type of congenital heart defect.
Amari Hall, 16, was nothing but smiles after his successful heart transplant at the University of Maryland Medical Center.
Edgar, an 8-week-old kitten in a Pasadena shelter, needs surgery that costs $4,000-$6,000 or he is not likely to survive.
Both Barack Obama and Hillary Clinton tweeted their support.
During an emotional and heartfelt monologue, Jimmy Kimmel opened up about his new baby boy's birth and health complications.