The Kelly quads from Co Offaly have plenty of reasons to celebrate.
Not only are the quadruplets from Kilclonfert celebrating their fifth birthdays, they will be doing so alongside their pet lambs Bubbles, Bessie, Chloe and Frosty, which the boys - James, Charlie, Tom and Luke Kelly - were given as birthday presents by their aunt, Leighann Kelly.
The adorable lambs won't wind up on anyone's dinner plate since they too are quads, born only two days before the boys' birthdays.
The chance of four lambs being born together is rare, with odds of about one in 400, according to Ms Kelly.
"It's very rare that the four of them are alive," she said.
She added she is beginning to suspect there might be something in the water to produce two sets of quads for the family.
"I hope that's the end of it," she joked.