Multipul First Gen Quest Creatures

I've been going through the clicks thread to try and get a little gold to buy some rare creatures and I've come across a couple of zoos with more than one First Generation Sea Serpants, Lion Turtles, or Library Foxes. How did you get them? I don't see anything but lineaged ones for sale (if those are even available) and I want a second one of each to breed mine with. Is there a trick to it?

no, they are bought on the black Island or found on the Abandoned Island. Sometimes people sell their Quest Creatures, cause people, for example me, are willing to pay more for an unlineaged creature than for a lineaged one.