he can have a fine life. My girl two bit had no back legs, well ok she had a little flipper she used to scratch an ear. She ran around looking something like a mutant shrimp, she climbed, she jumped, she was amazing.
My current two and a half legger, Shrimpie (he is buff colored and looks even more like a mutant shrimp) does the same thing. He had one partial hind leg that we amputated because it was causing chronic pain. it ended it a spike of bone with a thin layer of skin that he kept trying to stand on. the other hind leg actually has the first few foot bones and a little padding so it's like a pegleg almost, very shortened. Anyway, removing the painful leg significantly increased his quality of life. He hadn't been willing to run around before, it hurt, now he zooms all over and climbs. I'm betting your little guy will learn to walk on his front legs. Does he have any repsonse if you rub his toes? Just wondering.
The biggest "problem" my hind end mutant kitties have is that they cannot scratch their ears properly, so they are nearly obsessive about wanting their ears scratched. Butterbean loves to rub rub rub his head on things, Tommy just hollers and then if he sees a hand within read pushes his little head into your palm. Far as I can tell that's the only thing they notice bothering them.
Having two deformed kittens in one litter is a sign of something amiss, often, sometimes low level uterine infections can cause this. My crash course in tiny kitten intenstive care taught me a lot about such things, image 16 little mutant/sickly kittens on bottles. wow. Anyway. The other
possibility is something genetic causing limb malformations.
cleaning up a wiggly slimy pack of kittens is tough work, I did that once myself. congrats! I'm glad you want to keep him. he will surprise you
I look at my funny gang and I see how they just keep going, they don't mind their deformities, they just do what they want to. Some of them seem to have more attitude than the normal cats. Black Cherry, who has very limited use of her hind legs and mostly they drag, is quite fiesty and will chase normal, much larger cats, growling all the way.
Critters I didn't realize you had a syndactyly baby, I have one too. She sits up on her hind legs a lot but climbs and runs well enough.