Classic Sibling Rivalry
Cats aren't really fans of change or leaving their comfort zone. Pictures with a small Santa are probably not on their list of fun things to do, so it makes sense that tensions were high. At least a funny photo came of this?
They Are Totally Done
This is when you know that you totally lost the kids. No kid likes to sit still or do what they're told, which is why Christmas photo sessions are super rough on them. As long as the parents have a sense of humor, this would make a great Christmas card.