As they got bigger, their appetite soared. The brother and sister duo demanded their bottles every two hours and ate to their heart's content.

As soon as Ace cried for food or snacks, Indie followed suit and formed a little feline duet with her brother.

Ace was very brave and packed with endless energy. Indie followed his lead and didn't want to miss out on the action. After every play session, the little fluff balls would snuggle up together to recharge before their next round of roughhousing.

"Ace's pillow aka baby Indie purred so much that his head bobbed (when they napped)," Mellissa shared.