For the first year he grew extremely slow, he's about 7 lbs now and still extremely small of structure (which is one reason his ears look huge) His ears are so close together because they had to be sewn tightly across the top of his head with suture for a week, he had lost the skin between his ears when the wound abscessed and ruptured on his head. We had to drain his head and the right side of his face multiple times from infection. For the first month we had him he was completely blind, had difficulty positioning himself so he could eat, was only able to turn left and unable to keep his balance very well. Spookie is blind in his right eye, has horrible depth perception, gets startled easily, and is randomly fearful, he cannot be scruffed due to the scar tissue pulling painfully on the top of his head. However, he has learned how to run, jump, climb, play, hunt, he eats, uses the litter box, keeps up with the other cats, holds his own if he's cornered, and even though he walks funny and his tail is permanently curled, he is now able to walk in a straight line and turn both left and right.
Snowball was an orphan, I raised her with the dog and two other bottle-fed kittens. She's 4 years old now.