At least with Kaos and Feur, humans and dragons are compatible it seems but not as well as other allies 8,D with non-dragon hybrids, clutch sizes vary and having just one egg is fairly normal depending on the non-Kuros species too.
~Weird Hyenas
The most feared villains in all of Skylands, Kaos and his partner in crime The Lost Queen! Dare to ask them questions, their mischievous children Havok and Hysteria, and explore an alternative take on Skylanders!
Weirdlanders 