Amazing story, I loved every minute of it! The ending was so perfect, with Cas and Ade reminiscing and Cas realizing that now he's no longer alone and treated like a defect, but has a big, loving family with him wherever he goes!
I am curious about Zane and I need the sequel asap!
After reading the comments, Cuddlefish is one of the next stories on my to read list!
Edit: and well done for keeping up with everyone's color and shape of ears, hair, eyes, tails, etc. I imagine it must've been a big excel table!