Andromeda

Your lioness gave birth to Andromeda, and notices it is different to all the others. It has lumps all over its tiny body, but appears healthy otherwise.
The lumps covering Andromeda's body are getting bigger...
Andromeda has trouble moving. Looks like some lumps are growing deeper inside of the little cub's body as well.
Andromeda no longer plays with other cubs, having all its energy drained by trying to stand up or walk with all that weight.
You notice lumps covering Andromeda's spine and back. The cub doesn't move very much lately and is very apathetic.

You spot Andromeda and Grandpaw Zosma sitting near the edge of the den, staring up at the stars. Grandpaw Zosma is indicating a lot with his paws, and Andromeda is nodding thoughtfully to everything he's saying, though it's clear they don't understand a word of it.