What gameplay feature is this bug affecting?
Dynasty & Lethal

What's the issue? Please include any error messages you receive and as much detail as possible.
I saved two lethals in my dynasty a few weeks ago, in hopes of using a canopic jellyfish when I could actually buy some. I have them now, and went to revive my Cleft Palate but could not find them in my dynasty. Their Lipo sister is frozen and well, but I have no idea what happened to the Cleft Palate.

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
Cleft Palate should go by the name “Cleft Palate??” and their ID is: 794217297051. This is a link to them I snagged as well, no longer working but thought I’d offer anyways. https://www.lioden.com/lion.php?id=794217297051

Any screenshots you can provide us with?
I have a screen shot of the cleft palate itself if that helps! I can also show one of my dynasty but it’s empty for now.

Please provide us with step by step explanation how this bug happened so we can attempt to replicate it. If it's complex, please include screenshots where possible:
I allowed both my lethals to die and then stored them. Cleft Palate died first so they were saved first, then later on I saved the Lipo sibling once they died as well. Somehow the Cleft Palate sibling disappeared. I did not go back into the dynasty except to save the lipo cub, and only returned to freeze them when I realized Cleft Palate was not there.