Kidney stones
You should see your vet or pet shop to get the proper medication. A six week old kitten is too small to get adult cat medicine and you can hurt it with the wrong stuff.
A twelve week old kitten will in no way be able to spray. At such an age the kitten is comparable to a young child. Kittens usually reach sexual maturity around five to seven months old, and should ideally be spayed before six months old to avoid spraying and other possible problems developing.
Baby kittens are usually weaned around five to six week and gradually get them on regular kitten foods.
May be worms, blood from either end.
when the puppy is six months old because the body is adapting to water
It depends on the kitten. Some cats will never be happy being around other cats. It should be fine as long as you introduce them slowly, and don't leave them alone together for the first couple of days.I take in strays - 8 months ago I introduced a 5 month old to my other cats. 3 months ago I took in an 8 week old kitten, and last month I took in a 10 week old. For the past week I have been minding a motherless month old kitten for a friend. It usually takes about 2 or 3 days for the newbie to settle in and be accepted, but they all get along eventually. They play-fight, as cats do, but never hurt each other.Good luck.Usually if a kitten is young it will be more open-minded, and a 6 month old would probably be best friends with the 8 week old and play because they are both kittens and they will have each other to play with. Some cats are the exception because they have had an insecure past, but if they hiss at each other at first give it a couple of days and they will most likely settle down. :)it could take them from 3 days to several weeks for them to get along, i know this from personal experience, they may get into fights that you might have to break up.
food
like how you treat a new born baby, but dont give it a shower instead use a wet clothes to wipe off
I don't have a kitten with six canine teeth two at the top and four at the bottom.
Yes, six year olds should be old enough to be able to play with Nemo Bath toys. There are no small parts that the child can eat. You can check it out here! http://www.amazon.com/Dream-Disney-Splashmates-Bath-Toy/dp/B001E5PP2S
Because rabbits (like other rodents) become sexually active as early as six weeks old !
Yes, there are six week old puppies for sale in West Virginia. One company, PetsMart, always has young puppies that are up for adoption in any city.