Once their son found an injured kitten in the village. Some larger predator must've gotten the poor creature and it managed to either fight it off or escape. Covered in its own blood and with a mangled limb, the soft tenderhearted six year old her son once was, scooped it up and gently carried it home. Yelling out for his papa, he begged Antonin to save the kitten with hot tears streaming down his face. The terrifying Death Eater rushed to the aid of the kitten. Utilizing his extensive knowledge about healing spells and potions, Antonin was able to save the kitten to their son's relief. For days as it recuperated, the small creature slept in a box Ollie filled with a soft blanket. More than a few times, Hermione walked in on her formidable, violent husband speaking to the kitten in hushed, tender tones. No one would've believed her if she told them.