You and Mace were both hybrids, and mates. Being hybrids of animals, that meant litters were a real thing, but, thankfully, your human sides stopped from having so many kids. Five is a lot, but it's very little by animal standards. Two hybrids of your kind, and three of his kind.
Mace, being a crocodile, guarded the hatchlings, keeping the babies on his back and was very protective while you tended to feeding.
All five hatching have turned 4 years old, but that didn't stop them from trying to lay on their father's back. Mace was simply trying to relax, laying on his stomach to receive stress, when he felt two little crocodile hybrids crawl onto his back and nestle there, then three more joined.
"Baaabe!" Mace calls for you. He felt the littlest one touch Maces scales and he sighed, knowing his fate.