I have an issue with two of my pets. I am currently breeding them in an attempt to get a zolnixi with 4 visible features, but every time i click the 'breed pair' button, it gives me a message that says 'There was an error! These pets refuse to mate with each other!"

I have never had this issue happen before when breeding any pets. The strange thing is, is that these two have already mated before and had a baby. They will still mate with other zolnixi's. The female is not recovering, they are both in good health and not malnourished. Can anybody shed some light on the situation?

These are my two zolnixis:

Male: http://www.sylestia.com/view/pets/?petid=38638
Female: http://www.sylestia.com/view/pets/?petid=41429

and this is the baby they've already had before
http://www.sylestia.com/view/pets/?petid=65563

Any help would be greatly appreciated!

@Jewce
Their mothers are the same.

Siblings cannot breed.

(If people say otherwise or have done so before, breeding with siblings or half siblings was not meant to happen, so says Krin/Fai.)

edit: You probably did it the first time because there was no block on them, but then there was a block made after that.

It's probably the result of them being half-siblings. It has been mentioned before that inbreeding should be impossible (at least with siblings and half-siblings, I think it was said that related grandchildren could be bred?). So I'm not sure why they were allowed to breed before, probably either it hadn't been implemented yet, it was a bug, or there's some clause that allows them to breed once, but to my understanding they shouldn't be able to breed together at all.

ETA: Ehe, Flute beat me to it. xD

okay! Thanks! I thought it might have been that but i wasn't sure because they were able to breed before.